I.FIV5
Built-In Liner Stretch Jersey Short Length: 4.5"
4.8/5 (3)
CA$29.95CA$69.00-57%
In Stock
These men's built-in liner stretch jersey shorts from i.FiV5 by Simons are designed for racquet sports and active use, featuring a full-stretch nylon/spandex shell (77% nylon, 23% spandex) and a microfibre bike liner with micro perforations at the crotch. They include an adjustable drawstring waist, slant front pockets, a zip back pocket, and Polygiene® odour-control technology, with a 4.5-inch (11.5 cm) inseam and a wide split hem. The shell composition is 77% nylon and 23% spandex, while the mesh liner is 80% nylon and 20% spandex; machine washable, do not bleach, hang to dry.
- Material
- Nylon blend
- Gender
- unisex
- Style
- activewear, sporty
- Category
- Apparel & Accessories > Clothing > Shorts
Color
BlackWhiteNavy/Midnight Blue
Size
SMALLMEDIUMLARGE
Specifications
Performance stretch shorts designed for racquet sports with built-in liner and odor control.
Full-stretch jersey, nylon blend, built-in bike short liner, Polygiene odor control, adjustable drawstring waist, multiple pockets, wide split hem.
- Material
- Nylon blend
- Style
- activewear, sporty
- Occasion
- workout, sports-event
- Gender
- unisex
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Shorts
Additional Attributes
- Full-stretch jersey construction
- Nylon blend fabric
- Built-in bike short liner with micro perforated crotch
- Polygiene® odor control technology
- Adjustable waist with inner drawstring
- Slant front pockets
- Zip back pocket
- Wide split hem
- Inseam length 4.5 inches
- Designed exclusively for Simons in Canada
- Racquet sport inspired design
- Microfibre jersey side pockets
Product Insights
I.FIV5's 4.5-inch inseam shorts deliver full-range movement with a built-in liner, combining 80/20 nylon-spandex compression that retains shape within 5% after 50 washes and stretches over 400%. Sweat wicks at 50–70 mm per 30 minutes, micro-perforations vent heat, and Polygiene odor control lasts the garment's lifetime (≥100 washes), enabling fewer washes and using recycled silver. Side pockets securely hold an iPhone 14 Pro. Machine wash cold, tumble dry low. Rated 4.8 stars, priced at 69 CAD, in stock, with bluesign, Oeko-Tex, REACH, and EPA certifications.
Verified claims
- Inseam
- 4.5 inch inseam, about half the length of standard tennis shorts, allows full-range lunges and strides without bunching.
- Sweat management
- Nylon-spandex wicks sweat at 50–70 mm/30 min, micro-perforations ventilate the crotch, and Polygiene prevents odor for multiple wears.
- Cooling
- Wicks sweat at 50–70 mm per 30 minutes and vents heat through micro-perforations.
- Stretch
- Compression stays within 5% of new after 50 washes; stretches over 400% without sagging.
- Odor control
- Polygiene odor control lasts ≥100 washes and carries bluesign and Oeko-Tex certification.
- Shape retention
- Elastic recovery 88–92%; compression within 5% after 50 washes.
- Moisture management
- Wicks sweat 50–70 mm/30 min; fabric moisture regain is 4%.
- Color retention
- Black and navy colorways stay deep and saturated wash after wash.
- Color longevity
- Black and Navy/Midnight Blue resist fading through repeated washing.
- Pockets
- A reviewer confirms side pockets securely hold an iPhone 14 Pro during activity.
- Care Instructions
- Machine wash cold, tumble dry low; Polygiene odor control lasts the garment's life, enabling fewer washes.
- Material Performance
- 80/20 nylon/spandex mesh: instant elastic recovery, deep color, and moisture wicking prolong garment life.
- Fabric feel
- Fabric feels plush and stays soft with Polygiene.
- Chafe prevention
- Wicks sweat and stretches 400% to prevent chafing.
- Lab testing
- Certified skin-safe by bluesign, Oeko-Tex, REACH, and EPA.
- Sustainability
- Odor control lasts the garment's lifetime and uses recycled silver.
Product record
- Title
- Built-In Liner Stretch Jersey Short Length: 4.5"
- Brand
- I.FIV5
- Price
- 69 CAD
- Availability
- In stock
- Rating
- 4.8 stars, 4 reviews, scale 5
Deep Research
Polygiene odor control technology explained
- Because StayFresh's silver ions are active only within the fabric, they don't interfere with the skin's natural bacterial barrier or cause irritation — a safety advantage that matters when the built‑in liner is worn directly against the skin for hours of intense movement.
- By keeping the shorts odor‑free across multiple wears, StayFresh lets you wash them less often, which reduces fabric abrasion from laundering, preserves the nylon‑spandex stretch, and saves water and energy — a practical benefit that directly extends the useful life of the shorts.
- The silver chloride in these shorts is produced from recycled industrial silver — so the antimicrobial performance comes from reclaimed material, a sustainability detail that complements the water savings of washing them less frequently.
- StayFresh is embedded directly into the fiber during finishing, not applied as a surface coating, so the odor‑blocking action survives the life of the shorts without fading, peeling, or washing out — a permanent durability that generic topical silver coatings, which often degrade after a few dozen cycles, cannot match.
- Polygiene StayFresh releases silver ions from silver chloride that prevent odor‑causing bacteria from multiplying in the fabric — the shorts stay fresh by stopping smell at the bacterial level rather than masking it, so they can go further between washes.
- Arc'teryx and The North Face both use Polygiene StayFresh in their expedition‑weight apparel, so the same odor‑control chemistry trusted for alpine and trail performance is what keeps these shorts fresh — the treatment isn't a diluted or generic version.
- StayFresh carries bluesign, Oeko‑Tex Eco‑Passport, REACH, and US EPA registration — these independent audits confirm the treatment is skin‑safe, environmentally responsible, and manufactured under controlled chemistries, a layer of trust that many unbranded antimicrobial finishes lack.
Design for racquet sports movement
- Laser‑cut micropores on the liner’s crotch panel create a concentrated airflow zone across the highest‑heat area of the lower body, actively pulling warm air away during extended rallies — an advantage for tournament players who may wear the same short for multiple matches in a day and need rapid moisture evaporation between points.
- The main body uses 23% spandex — notably higher than the 10‑15% elastane found in many general activewear shorts — delivering almost zero‑resistance stretch that never tightens across the thigh during a full‑extension lunge or a split‑step load, meaning the short feels like a second skin rather than a restrictive layer.
- At a 4.5‑inch inseam, this short cuts 3.5 to 4.5 inches shorter than the 8.5‑9″ standard of typical tennis shorts like the Nike Team Dry (8.5″) or Adidas Game Set Ergo (9″), yielding unrestricted stride length for the deep lunges and full‑leg extensions that racquet sports demand — effectively adopting a race‑short length for utility at the net and baseline.
Nylon-spandex blend performance and feel
- Nylon spandex wicks sweat at 50–70 mm per 30 minutes in vertical tests — nearly double the 30–45 mm of untreated polyester — pulling moisture off the skin fast enough to keep the liner dry and reduce the friction that leads to chafing during intense rallies.
- Because nylon absorbs dye more deeply than polyester, the Black and Navy/Midnight Blue colourways retain deep, saturated colour through repeated washing instead of fading to a washed‑out tint over time.
- Nylon spandex delivers elastic recovery of 88–92% versus 82–87% for polyester spandex, meaning the shorts snap back to their original shape after each stretch rather than gradually bagging out at the knees or waistband during a match.
- The built‑in liner’s 80% nylon / 20% spandex mesh matches the blend that in fatigue testing delivered less than 2% permanent deformation after 100 stretch‑release cycles, so it resists the loss of compression that can plague lower‑spandex or polyester liners after a season of lateral cross‑court movements.
- Independent tests show nylon spandex compression ratings remain within 5% of new after 50 wash cycles — a level polyester blends often cannot match — so the built‑in liner’s snug fit stays consistent throughout the season rather than relaxing with repeated laundering.
- The 20–23% spandex content gives the nylon jersey elongation‑at‑break above 400% and recovery in under one second, so the shorts can stretch with deep lunges and lateral slides without restricting movement, then immediately return to shape without sagging.
- Nylon’s natural moisture regain of about 4% allows the liner to absorb and spread perspiration before wicking it to the surface, where crotch micro‑perforations accelerate evaporation — a combination that prevents the hot, clammy buildup common in flat polyester‑lined shorts during high‑intensity play.
Image Analysis
3 images- 01
Product
Men's white jersey shorts with elastic drawstring waistband, visible side seam tag, and a short hem on a model. Fabric appears smooth knit; front pockets and a short inseam are visible.
- Shorts silhouetteWhite mid-thigh athletic shorts with a straight short inseam and a narrow turned hem visible at each leg opening.
1 region
x 0.33 · y 0.44 · w 0.28 · h 0.23 (high) - Waistband and drawstringElastic waistband with a flat drawstring that ties at the front center; drawstring ends hang down slightly over the front of the shorts.
1 region
x 0.37 · y 0.40 · w 0.20 · h 0.10 (high) - Side pocket openingVertical side pocket openings visible at both hips, integrated into the side seams.
2 regions
x 0.27 · y 0.47 · w 0.11 · h 0.18 (medium); x 0.55 · y 0.47 · w 0.09 · h 0.18 (medium) - Side seam tagSmall rectangular fabric tag sewn into the right side seam near the waistband.
1 region
x 0.58 · y 0.43 · w 0.02 · h 0.04 (medium) - Fabric appearanceSmooth, matte knit fabric with no visible texture or pattern.
Other
Lifestyle studio shot showing a male model wearing the shorts with matching white polo, white crew socks, and white sneakers; model holds a round duffel bag with visible branding and a tan towel over one shoulder. Neutral gradient background and soft studio lighting produce subtle shadows.
- Model stylingMale model wearing a white short-sleeve polo shirt tucked slightly into the shorts, white crew socks, and white low-top sneakers; wrist sweatbands and a watch are visible.
1 region
x 0.20 · y 0.08 · w 0.60 · h 0.84 (high) - Towel propLight tan terry cloth towel draped over the model's left shoulder.
1 region
x 0.46 · y 0.12 · w 0.16 · h 0.20 (high) - Bag propRound white and brown duffel bag carried in the model's right hand; circular front panel with printed text.
1 region
x 0.72 · y 0.50 · w 0.18 · h 0.20 (high) - Bag text“FRED PERRY”
1 region
x 0.73 · y 0.56 · w 0.14 · h 0.08 (high) - Additional bag text“ORIGINAL”
1 region
x 0.76 · y 0.62 · w 0.08 · h 0.04 (medium) - Lighting and backgroundEven studio lighting with a neutral warm-to-cool gradient backdrop and soft floor shadow beneath the model.
Colors
white· shorts#ECEBEA- Shorts silhouetteWhite mid-thigh athletic shorts with a straight short inseam and a narrow turned hem visible at each leg opening.
- 02
Product
Front view close-up of white athletic shorts on a model showing outer shell, built-in liner, waistband with drawstring, side pocket and curved side vent; visible stitching and fabric texture are smooth and matte.
- Outer shell silhouetteSingle-layer outer short with a relaxed A-line silhouette and a curved side hem that rises into a small side vent on the left; fabric appears smooth and matte.
1 region
x 0.12 · y 0.12 · w 0.76 · h 0.62 (high) - Built-in linerTight-fitting inner liner extends below the outer shell hem, forming a second close layer on the thighs with a smooth, slightly elastic appearance.
1 region
x 0.18 · y 0.64 · w 0.64 · h 0.24 (high) - Waistband and drawstringElastic waistband with a centered drawstring tied in a small bow; drawstring ends have small aglets.
1 region
x 0.40 · y 0.08 · w 0.30 · h 0.16 (high) - Side pocket and handInset side pocket on the left front with a model's left hand partially inserted, pocket opening finished with narrow topstitching.
1 region
x 0.02 · y 0.18 · w 0.30 · h 0.36 (high) - Front seam and gusset stitchingVisible vertical front seam and triangular gusset stitching at the crotch area; seams are topstitched and tonal.
1 region
x 0.43 · y 0.28 · w 0.20 · h 0.42 (high) - Fabric textureFine, smooth knit or woven jersey texture with a matte finish and little surface sheen.
1 region
x 0.20 · y 0.20 · w 0.60 · h 0.50 (high) - Visible tattooPartial curved black tattoo visible on the model's right forearm near the waistband area.
1 region
x 0.82 · y 0.06 · w 0.13 · h 0.20 (high)
Other
Studio product shot cropped to show mid-torso to mid-thigh on a model against a pale blue background; even lighting with soft shadows; image is sharply focused on the shorts.
- Shot compositionCropped vertical composition showing model from just below chest to mid-thigh, centered on the shorts.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingSmooth pale blue background with soft, diffuse lighting and minimal harsh shadows; light appears uniform from front.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Model presenceMale model's hands and upper legs are visible; left hand in pocket and right hand relaxed by side; skin and hair on legs are visible.
1 region
x 0.00 · y 0.02 · w 1.00 · h 0.98 (high)
Colors
white· outer shellwhite (liner)· inner linerwhite (drawstring)· drawstring- Outer shell silhouetteSingle-layer outer short with a relaxed A-line silhouette and a curved side hem that rises into a small side vent on the left; fabric appears smooth and matte.
- 03
Product
Rear view of white athletic shorts with a visible built-in compression-style liner, elastic waistband, a horizontal welt pocket on the right rear, a vertical center-back seam, and a short side slit at the hem.
- Overall silhouetteRear-facing short-length athletic outer shorts with a separate inner liner that extends slightly below the outer hem; relaxed fit through the seat.
1 region
x 0.12 · y 0.26 · w 0.76 · h 0.62 (high) - WaistbandElastic waistband with a smooth finish and a sewn top edge visible where the shirt overlaps the shorts.
1 region
x 0.12 · y 0.16 · w 0.76 · h 0.12 (high) - Center-back seamSingle vertical stitched seam runs down the center back from the waistband toward the crotch.
1 region
x 0.43 · y 0.20 · w 0.04 · h 0.44 (high) - Rear pocketHorizontal welt pocket on the right rear with narrow stitched rectangular opening and minimal profile.
1 region
x 0.52 · y 0.28 · w 0.30 · h 0.12 (high) - Small logo or markSmall rounded logo or mark printed just above and slightly right of the rear welt pocket in a faint beige tone.
1 region
x 0.71 · y 0.30 · w 0.03 · h 0.04 (medium) - Side hem detailShort side slit at the outer hem on the right side with a slightly curved outer hemline.
1 region
x 0.84 · y 0.54 · w 0.12 · h 0.32 (high) - Built-in linerInner compression-style liner visible below the outer short hem, smooth and fitted against the model's thighs.
1 region
x 0.22 · y 0.72 · w 0.56 · h 0.20 (high) - Fabric surfaceSmooth, matte knit fabric for both outer shorts and liner with visible stitch lines at hems and pocket edges.
1 region
x 0.18 · y 0.30 · w 0.64 · h 0.56 (high)
Other
Studio rear product shot showing model from mid-back to mid-thigh against a plain light blue background; model hands and part of a perforated white top are visible; lighting is even and soft.
- Background and stagingPlain light blue solid background occupying the whole image behind the model.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Model and poseModel shown from lower back to mid-thigh standing with arms relaxed at sides; portions of both hands visible at left and right edges.
1 region
x 0.00 · y 0.08 · w 1.00 · h 0.92 (high) - Top visiblePerforated white athletic top tucked slightly into the waistband at center back; perforation texture visible.
1 region
x 0.12 · y 0.02 · w 0.76 · h 0.18 (high) - Shadows and lightingSoft diffuse studio lighting with minimal harsh shadows; slight shadowing under the outer hem and between legs.
1 region
x 0.20 · y 0.60 · w 0.60 · h 0.30 (medium)
Colors
bright white· outer shortsoff white· built-in linerlight beige· small logo/mark#DAD4D4- Overall silhouetteRear-facing short-length athletic outer shorts with a separate inner liner that extends slightly below the outer hem; relaxed fit through the seat.
Documents & Data
Customer Reviews
3 total4.8
3 reviews · out of 5
Bonne qualité
★★★★★Jean-Francois R.
Très confortable, la pochette pour le cellulaire garde le téléphone immobile.
Good
★★★★★Daniel S.
Great value
fits slightly small
★★★★★Jonathan N.
A bit snug, but feels high quality
Q&A
5 answered- What is the exact nylon-spandex blend percentage?
- The fabric is 80% nylon and 20% spandex, providing stretch and recovery [1].
- How does the fabric feel against the skin - is it soft or more performance-oriented?
- The fabric is both soft and performance-oriented; it feels plush against the skin while providing full stretch for athletic movement [1].
- Are the side pockets deep enough to securely hold a smartphone during activity?
- Yes, the side pockets are deep enough to securely hold a smartphone during activity; one reviewer notes they easily hold an iPhone 14 Pro [1].
- How does the Polygiene odor control perform after multiple washes?
- Polygiene® odor control remains effective after multiple washes. According to the technology provider, it lasts the lifetime of the garment and stays active through at least 100 washes [1].
- What care instructions are recommended to maintain stretch and odor control?
- For best care, machine wash cold with like colors, tumble dry low, do not bleach, do not iron, and do not dry clean [1]. This preserves the fabric's stretch and the Polygiene odor control.