Owala
Smoothsip Insulated Mug 20 Oz.
The Owala SmoothSip is a 20 oz (590 ml) insulated travel mug made from food-grade stainless steel with triple-walled vacuum insulation to keep beverages hot or cold for hours. It features a patented, leakproof slider lid that opens easily with one thumb and fits most cup holders; hand-washing is recommended. User reviews highlight its comfortable spout and reliable leak resistance, though some report inconsistent heat retention and occasional slider durability concerns.
- Material
- Rugged food-grade stainless steel
- Category
- Home & Garden > Kitchen & Dining > Tableware > Drinkware > Mugs
Color
Size
Specifications
Insulated mug for hot or cold beverages. Features triple-wall vacuum insulation and patented waterproof lid.
Triple-walled vacuum-insulated, patented waterproof lid, BPA and phthalate free, 20 oz capacity.
- Material
- Rugged food-grade stainless steel
- Gender
- unisex
- Age Group
- adult
- Condition
- new
- Category
- Home & Garden > Kitchen & Dining > Tableware > Drinkware > Mugs
Additional Attributes
- rugged food-grade stainless steel
- BPA and phthalate free
- triple-walled and vacuum-insulated
- patented waterproof lid
- hand-wash recommended
- 590 ml (20 oz.) fill capacity
- base fits most cup holders
Product Insights
The Smoothsip Insulated Mug features a patented curved spout that naturally seals to prevent side spills and the wet-nose sensation, while its temperature-sensing design reduces burn risk by letting lips feel heat before hot coffee enters the mouth. A controlled 16-second pour for 16 ounces prevents scalding and glugging, and the leakproof seal outperforms Yeti in tests, staying secure without a lock even when shaken. However, the mug's tradeoffs include paint chipping within weeks, plastic lid components that may chip during reassembly, and warranty claims that can be denied or take months. It fits standard cup holders, opens one-handed, and eliminates metallic taste with a ceramic lining, but its 20-ounce size (weighing 344 g empty) causes hand fatigue for some, and users desire a 16-ounce option. At $42 CAD, it is slightly cheaper than Yeti and adds a leakproof lid, though hot coffee cools approximately 70°F per hour and ice melts overnight.
Verified claims
- Spout comfort
- Buyers report the patented curved spout seals naturally, prevents side spill, and avoids the wet-nose sensation.
- Temperature sensing
- Lips sense hot coffee temperature before it enters the mouth, reducing burn risk.
- Flow control
- Controlled 16-second pour for 16 oz prevents scalding and glugging.
- Leakproof seal
- Seal outperforms Yeti in leak tests and holds without lock, even when shaken.
- Slider operation
- Slider releases pressure before opening for safe one-handed use.
- Performance factors
- ~70°F/hr heat loss unaffected by size or preheating; slider open accelerates cooling.
- Construction context
- Double-wall copper insulation: YETI-level heat and cold retention that melts ice overnight.
- Disassembly steps
- Lid disassembles via slider pop and 90° gasket twist.
- Cleaning
- Prevents mold but requires more disassembly than magnetic lids.
- Dishwasher compatibility
- Lid components are dishwasher safe; body hand-wash recommended.
- Lid function
- Leakproof slider stays sealed when shaken or dropped, and opens with one thumb.
- Overall value
- At $42 CAD, it is slightly cheaper than Yeti and adds a leakproof lid.
- Paint finish
- Buyers report paint chipping from the exterior finish within the first two weeks.
- Lid mechanism
- Plastic lid components may chip during reassembly and disassembly can crack parts, according to user reports.
- Warranty
- Warranty claims may be denied or take months to process, based on a buyer's experience.
- Durability
- Survives a 3-foot drop onto concrete with minor dents; steel interior resists chipping.
- Grip
- Flatiron shape improves grip for some, but weight and size cause hand fatigue for others.
- Fit
- 2.75-inch base fits standard car cup holders.
- One-handed use
- Easily opened and used with one hand while driving.
- Size options
- Buyers want a 16 oz size between 12 and 20 oz options.
- Weight
- 20 oz weighs 344 g empty; full weight ~900 g is cumbersome for extended carry.
- Thermal performance
- 20 oz and 12 oz cool identically (~70°F per hour); no thermal advantage from size.
- Size & value
- 20 oz: same price as 12 oz in stainless; good for iced coffee and commutes; desire for 16 oz middle.
- Pricing
- Ceramic and stainless linings cost the same on the 20 oz mug.
- Taste
- Ceramic lining eliminates metallic aftertaste.
- Lid performance
- Leakproof for bag carry but slider may open if jostled and can chip during cleaning.
- Insulation
- Hot coffee drops below 140°F within an hour; ice melts overnight.
- Commute ergonomics
- Fits cup holders, opens with one thumb, curved spout, no glug, secure grip, 12.15 oz.
- Build and value
- Stainless steel interior; paint may chip quickly; $30 USD (≈42 CAD), competitive vs Yeti.
- Color appeal
- Pale pink colorway is often praised as an attractive finish.
Product record
- Title
- Smoothsip Insulated Mug 20 Oz.
- Brand
- Owala
- Price
- 42 CAD
- Availability
- In stock
Deep Research
How it stacks up against Yeti, Contigo, and Brumate
- Where YETI’s MagSlider lid leaked outright when shaken and inverted, the SmoothSip shed only ‘minor droplets’ under the same protocol — a decisive win for commuters who toss their mug into a backpack, offset by YETI’s easier-to-clean magnetic lid that does not require disassembly.
- After a 3-foot drop onto concrete, the SmoothSip suffered only a minor dent while YETI’s lid popped off and Stanley’s lid cracked, suggesting Owala’s lid attachment can handle everyday drops better than two iconic brands that market ruggedness.
- In side-by-side testing of nine travel mugs starting at 190°F outdoors, the SmoothSip landed at 55°F after 15 hours — behind Zojirushi’s 117°F and Contigo’s 89°F, but essentially level with YETI’s 52°F, confirming that Owala engineered the triple-wall vacuum for a morning commute, not an all-day thermal lock.
- Priced at $29.99, the SmoothSip undercuts the YETI Rambler ($30.40) by a hair and sits above the Contigo Byron 2-pack ($25.99), offering a leakproof seal that YETI lacks and a more polished drinking lip than Contigo’s utilitarian spout, making it the leak-safe daily choice in this price band.
- Owala’s distinct flat-sided silhouette diverges from the completely round profiles of YETI and Contigo, aiming for a secure, no-slip grip in motion; the trade-off is a bulkier feel in smaller hands, so the 20 oz version reads as a stable commuter grab, not a petite palm fit.
- The SmoothSip’s leakproof slider demands a more involved disassembly for deep cleaning — users report needing to snap off the button with trepidation — while YETI’s MagSlider and other magnetic lids rinse instantly; Owala’s design favors a dry bag over dishwasher convenience for those who accept the occasional detailed scrub.
- BrüMate’s Müv 35oz adds a locking slider, a larger 35-oz capacity, a comfort-grip handle, and a removable silicone sleeve — positioning it as a camp-desk mug with 6+ hour hot claims — while the SmoothSip remains slimmer, handleless, and more pocketable for car-cup-holder commutes; the Müv is a stationary sipper, the SmoothSip a grab-and-go.
- The SmoothSip’s spout meters a 16-second pour for 16 oz — fast enough to not frustrate but controlled enough to avoid scalding, with users specifically praising its ability to let lips sense temperature before drinking, an advantage over the 2-second unrestricted flow of the Fellow Carter Move and the ponderous 26 seconds of the Zojirushi.
Spout design and sipping comfort
- The venting and spout design eliminate air-lock glugs, delivering a consistent, uninterrupted stream of liquid sip after sip — a consistency that prevents the sudden splash-and-choke moment common in poorly vented travel mugs.
- The vent is positioned far enough from the sipping zone that the nose never touches it, an ergonomic detail that eliminates the cold, wet-nose sensation some travel mugs create and contributes to an unusually clean drinking posture.
- The spout features a slight curve that molds to the lips, creating a natural seal that banishes the sharp plastic ridge feel of typical travel mugs — described by reviewers as the reason the mug feels like drinking from a ceramic cup rather than a sippy lid.
- The spout is patented — a signal of R&D investment rather than an off-the-shelf lid — and third-party reviews confirm the experience lives up to the ‘silky smooth’ marketing claim, with Pack Hacker calling the sipping experience ‘pretty incredible’ and multiple users highlighting the unusual comfort.
- The spout opening is shaped so that hot coffee touches the lips before flooding the mouth, allowing the drinker to gauge temperature and avoid burning — a tactile safety feature that converts a cautious first sip into a confident one, particularly appreciated by users coming from Yeti mugs.
How the patented slider lid works and how to care for it
- The rubber lid gasket is secured by a plastic retaining ring that releases with a quarter-turn, exposing the seal groove where coffee residue hides; keeping this groove clean restores the airtight seal that defeats leaks when the slider is closed.
- The slider lid breaks into four user-removable parts — slider cap, seal-retaining plastic piece, rubber gasket, and lid body — allowing deep cleaning of coffee oils from the slider track and seal cavity that would otherwise cause progressive slide stiffness and odor buildup.
- All lid components — slider, rubber seal, small plastic retainers, and the lid itself — are rated for top-rack dishwashing, while the stainless body is hand-wash only to preserve its exterior finish, so the mouth-contact surfaces can be fully sanitized without extra scrubbing.
- Popping the slider off for cleaning requires deliberate upward force, and Owala’s official guidance that “a little force is normal” confirms the slider is designed to stay securely seated during use rather than glued — so users encountering initial resistance can clean without fear of snapping plastic.
- The slider requires a deliberate press-down to vent built-up pressure before it can slide open — a patented design that eliminates the hot-spray burst common with twist-open travel mugs, making one-handed opening safe even after a long commute with a near-boiling fill.
What triple-wall insulation actually means
- Because the 'triple-wall' designation refers to an internal coating inside the vacuum rather than a third metal shell, the mug stays as slim and cup-holder-friendly as a typical double-wall tumbler — so it delivers its insulation advantage without sacrificing portability.
Real-world heat retention performance
- While Owala advertises up to 24 hours of cold retention, a hands-on test found the vacuum insulation kept an icy beverage cold through the night but the ice cubes fully melted by morning, so the mug maintains chilled-liquid temperature well but will not preserve ice for all-day iced coffee.
- All three SmoothSip Slider models — 12 oz, 20 oz stainless, and 20 oz ceramic — lost 69–70°F over one hour in independent timed tests, with the 12 oz ending at 116°F from a 186°F start and the 20 oz ending at 102°F from 172°F, proving the slider lid and insulation dictate a fixed heat loss rate so that cup size or lining does not change the cooling curve and the drinking temperature an hour later depends almost entirely on how hot the coffee is when poured.
Stainless steel interior versus ceramic lining
- For the 20-ounce SmoothSip, the ceramic and standard stainless versions have been priced the same ($30 USD at launch), while the 12-ounce ceramic typically carries a $5 premium—so on the larger mug choosing stainless is purely a preference for the traditional interior, not a cost-driven compromise.
- The standard food-grade stainless steel interior is extremely tough and handles daily knocks, metal spoons, and dishwasher cycles without chipping—making it the more carefree option for anyone who has never noticed a metallic aftertaste from stainless drinkware.
Image Analysis
2 images- 01
Product
Tall cylindrical insulated travel mug with a matte black body, a slightly darker black screw-in style lid with a shallow recessed drinking area, and a vertical light-blue logo printed near the lower side.
- Body shapeTall, slightly tapered cylindrical stainless-steel mug body visible from near top to bottom with a smooth matte finish.
1 region
x 0.28 · y 0.15 · w 0.44 · h 0.70 (high) - Lid constructionLow-profile, screw-on style lid in a darker black with a shallow recessed drinking well and a small domed slider or cap feature visible in the center of the recess.
1 region
x 0.28 · y 0.06 · w 0.44 · h 0.14 (high) - Finish textureExterior shows a matte, slightly textured finish that produces a subtle specular sheen on the right side where light hits.
1 region
x 0.50 · y 0.20 · w 0.20 · h 0.40 (medium) - Logo text“owala”
1 region
x 0.58 · y 0.62 · w 0.12 · h 0.22 (high) - Logo orientationLower-side logo printed vertically (characters rotated so text reads bottom-to-top along the mug side).
1 region
x 0.58 · y 0.62 · w 0.12 · h 0.22 (high)
Other
Studio product shot with neutral light gray background, the mug placed on a textured gray surface casting a soft shadow to the left; even soft lighting from right creates highlights on the mug body.
- BackgroundSmooth pale gray gradient backdrop occupying the upper portion of the frame.
1 region
x 0.00 · y 0.00 · w 1.00 · h 0.55 (high) - Supporting surfaceTextured mid-gray horizontal surface on which the mug sits, occupying lower portion of image.
1 region
x 0.00 · y 0.55 · w 1.00 · h 0.45 (high) - Shadow and lightingSoft shadow projects leftward from the mug; primary lighting appears from right producing a soft highlight on the right side of the mug body and a gentle rim on the lid.
1 region
x 0.05 · y 0.65 · w 0.40 · h 0.28 (medium) - Shot compositionCentered, vertical portrait framing showing the full height of the mug with slight perspective narrowing toward the top.
Colors
matte black· body#201F24deep black· lidpale sky blue· logo- Body shapeTall, slightly tapered cylindrical stainless-steel mug body visible from near top to bottom with a smooth matte finish.
- 02
Product
Close-up of the mug's lid and upper body edge showing a circular push-button or plug with molded brand text and an integrated drinking spout at the rim.
- Circular push buttonRaised circular button recessed into the lid center with molded brand text and three short raised parallel lines above it.
1 region
x 0.39 · y 0.36 · w 0.22 · h 0.22 (high) - Brand text on button“owala”
1 region
x 0.43 · y 0.43 · w 0.14 · h 0.08 (high) - Raised parallel marks“///”
1 region
x 0.44 · y 0.40 · w 0.10 · h 0.05 (medium) - Integrated drinking spoutOval drinking opening recessed into the rim at the lower edge of the lid, aligned with the lid center; rim around the spout is slightly raised.
1 region
x 0.34 · y 0.72 · w 0.32 · h 0.18 (high) - Inner lid contourConcave inner lid surface forming a smooth circular well around the central button with a uniform matte finish.
1 region
x 0.28 · y 0.22 · w 0.52 · h 0.52 (high) - Exterior body edgeVisible section of the mug body at top-left showing a cylindrical wall with a slightly textured matte finish and a thin raised rim at the lid interface.
1 region
x 0.00 · y 0.00 · w 0.54 · h 0.33 (high)
Other
Studio shot with the mug laid on its side on a neutral light-gray surface, soft directional lighting from top-right producing a shadow to the left.
- Shot compositionClose-up detail shot framing the lid and rim at an oblique angle; body recedes to the upper-left corner and the spout sits near the bottom edge of the frame.
- Background and surfaceSmooth light-gray background and surface with a soft shadow cast by the mug toward the lower-left.
1 region
x 0.00 · y 0.60 · w 1.00 · h 0.40 (high) - Lighting and reflectionsSoft directional lighting creates subtle specular highlights on the curved plastic surfaces and mild gradients across the matte finish.
Colors
matte charcoal black· outer body#201E1Ematte dark gray· inner lid and button#2A292Edeep black· drinking spout rim interior#1C1A1E- Circular push buttonRaised circular button recessed into the lid center with molded brand text and three short raised parallel lines above it.
Documents & Data
Customer Reviews
7 total7 reviews · out of 5
Beau et chaud.
E Les couleurs sont parfaitement agencées et elle garde chaud et à l'abris de la poussière très longtemps
Smooth sip insulated mug 20oz
Love it
Excellente tasse
Je l’adore! Elle fait ce qu’elle doit, mais en plus elle est belle. Un beau rose pâle.
Cadeau idéal
Cadeau idéal
Tasse
Je l’adore
Parfaitement étanche, facile à laver,
Parfaitement étanche, facile à laver, ergonomie pour boire parfaite.
Great isotherm cup
Great isotherm cup, the coffee stay hot for hours. It's a good purchase for class or working hours.
Q&A
10 answered- What is the exact base diameter of the mug? Will it fit standard car cup holders and stroller cup holders?
- The base diameter of the 20 oz SmoothSip is 2.75 inches, as confirmed by the brand in their Q&A [1]. This fits most standard car cup holders, though stroller cup holder compatibility varies by model. The mug tapers slightly, so the base fits where a standard 3.4-inch wide body might not.
- Does the lid have a locking mechanism to prevent the slider from opening accidentally when jostled in a bag or backpack?
- No, the slider lid does not have a locking mechanism. Owala's official instructions state the slider is leakproof under normal conditions but can open if jostled or shaken, especially with pressurized contents [1]. For bag travel, we recommend storing upright and keeping items away from the slider to prevent accidental opening.
- How long does the mug typically keep coffee above 140°F when preheated with hot water before filling?
- Independent testing found that without preheating, the 20 oz Slider dropped from 172°F to 102°F after one hour [1], so it falls below 140°F well within that hour. Preheating with hot water would improve initial temperature but likely still won't keep coffee above 140°F for more than about 30–45 minutes, based on the rapid heat loss observed. Community feedback on heat retention is mixed, with some users noting it cools faster than expected [2].
- Is the food-grade stainless steel interior safe for acidic or carbonated beverages like soda or lemon water without affecting taste or causing corrosion?
- The stainless steel interior (food-grade 304) is safe for acidic beverages like lemon water or soda without corrosion or taste issues. However, the official warnings explicitly state not to use this mug with carbonated beverages [1], because pressure buildup can cause the slider to open or the seal to fail, leading to leaks. For still acidic drinks, it's fine.
- What is the empty weight of the 20 oz mug? Is it suitable for hiking or travel where weight matters?
- The empty weight of the 20 oz SmoothSip is about 12.15 oz (344 g) [1]. That's heavier than typical plastic water bottles but reasonable for an insulated stainless steel mug of this capacity. For hiking or travel, it's manageable if weight isn't your top priority, but some users note the 20 oz feels bulky and heavy for extended carry [2]. The 12 oz version would be lighter at roughly 10 oz.
- Is the Owala Smoothsip truly leak-proof?
- Yes, users report it is completely leak-proof even when shaken or tossed in bags, making it ideal for commuting.
- How well does it retain heat?
- Opinions are divided; some say it keeps coffee hot for hours, while others feel it cools down too quickly, especially if the slider is left open.
- Which size is better: 12oz or 20oz?
- 20oz is more practical for larger drinks and iced coffee; 12oz is cuter and fits under a Nespresso. Many wish for a 16oz option.
- Is the slider durable and easy to use?
- The slider can be stiff initially but often loosens. Some users find it flimsy and have experienced plastic chipping during reassembly.
- Is it easy to clean?
- Most find it easy to disassemble and clean, but care is needed as some have broken parts while following instructions.
Reddit Insights
6 threads · r/OwalaReddit's overall sentiment on the Owala Smoothsip is mixed: many praise its leakproof design and comfortable spout, while common complaints include inconsistent temperature retention, slider durability issues, and poor warranty service.
While a majority of users appreciate the leak-proof construction and mouthpiece comfort, significant negative feedback regarding temperature retention, slider mechanism, and customer service prevents an overwhelmingly positive consensus.
Themes
Use Cases
- Commuting with coffee/tea
- Daily iced coffee consumption
- General hot drink enjoyment at home or work
Watch Out For
Compared To
vs Brumate MUV
User chose Owala over Brumate for its easier one-thumb opening and superior spill-proof design.
vs Contigo
User switched from Contigo to Owala because Contigo mugs would get moldy and were hard to clean; Owala is easier to maintain.
Source Threads
User reports poor heat retention and cheap slider
I’m gonna play devil’s advocate and say I probably wouldn’t purchase it again if I had the choice. Mine doesn’t keep drinks very hot for long and the slider on the lid feels cheap and flimsy. When putting it back together after cleaning, the plastic on mine chipped even though I followed owala’s instructions for assembling/disassembling 😑
u/justnadier/OwalaView thread →
User chose Owala over Brumate for leakproof design and easy opening
I'm extremely picky about coffee mugs and did some extensive research between the Owala SmoothSip Slider vs. Brumate's MUV line. I ultimately went with Owala because of how easy it is to open with your thumb (I drink coffee while driving to work) and how spillproof it is (I've literally chucked them in relatively expensive purses with no fear of leakage). Another cherry on top is that Owala just released some ceramic-lined mugs yesterday if taste is important to you.
u/Unique_Following41r/OwalaView thread →
User discusses size preference, wishing for 16oz option
The 12oz is so cute but I use a 20oz everyday. I wish there was a middle version because I don't fill up the 20oz but know the 12 would be too small for my needs. 16oz seems better
u/silent_antelope28r/OwalaView thread →
User praises easy cleaning and leakproof design
I really like it, the slider is not stiff after you take it apart to clean it and put it back together, which I did immediately after getting it. Now the slider is really easy to open and close and I like the spout since it is easy to sip from and doesn’t spill from the sides of my mouth. It is completely leak proof and even splash proof, meaning it has to tilt more than 90° to spill anything. It is also extremely easy to clean after you take everything apart, which is a huge plus. I used to use contigo coffee travel mugs but they would without fail get moldy over time and were extremely difficult to clean
u/mochimmy3r/OwalaView thread →
User experienced paint chipping and poor warranty service
I have the exact one from your picture. It’s my second one. The first one, the paint started chipping off less than 2 weeks after I got it. Owala did not want to honor their warranty, and it took almost 3 months for me to get a replacement after much back and forth and many delays. It left a very sour taste in my mouth. The tumbler itself is nice, but nothing groundbreaking. I like the size, and I like the color. But as far as functionality goes, you can get the same thing from any other insulated tumbler. Based on the quality and abismal customer service, I no longer recommend Owalas.
u/sinjin_wolfer/OwalaView thread →
User praises heat retention and easy maintenance
Definitely a smoothsip slider. Love the mouth feel. Stays hot for soooo long. Only the gasket of the top is silicon. It stays on super well. The slider does not leak and is super easy to take apart and clean once you watch the video.
u/Reasonable_Ideal_356r/OwalaView thread →