I.FIV5
Second Skin Ribbed Running Short Length: 8.25" (21 Cm)
These i.FiV5 by Simons Second Skin Ribbed Running Shorts are form-fitting athletic shorts designed for running and training. They feature a stretch nylon-blend microfibre jersey with ribbed texture, Polygiene odour-control technology, a built-in micro-perforated underpant, and an elastic waist with inner drawstring. Additional specs include a hidden zip pocket at the back and an 8.25-inch (21 cm) inseam.
- Material
- Stretch nylon-blend textured microfibre jersey
- Style
- sporty, performance
- Category
- Sporting Goods > Athletics > Track & Field
Color
Size
Specifications
Stretch nylon-blend running shorts with anti-odor technology and built-in underpant.
Stretch nylon-blend textured microfibre jersey, Polygiene anti-odor technology, built-in micro-perforated underpant, elastic waist with adjustable inner drawstring, hidden zip pocket.
- Material
- Stretch nylon-blend textured microfibre jersey
- Style
- sporty, performance
- Occasion
- workout
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Sporting Goods > Athletics > Track & Field
Additional Attributes
- stretch nylon-blend textured microfibre jersey
- Polygiene technology that eliminates odour and prevents bacteria growth
- built-in micro-perforated underpant
- elastic waist with adjustable inner drawstring
- hidden zip pocket behind
- inseam length 8.25" (21 cm)
Product Insights
The I.FIV5 Second Skin Ribbed Running Short (8.25") combines a nylon-spandex ribbed knit with under 2% deformation after 100 cycles, built-in micro-perforated underpant, and 8.25-in inseam to prevent chafing and ride-up. It features a hidden zip pocket and permanent Polygiene silver-based odor control from recycled silver. At a sale price of $39.95, it delivers 2-in-1 support and a hidden pocket, surpassing budget mesh-lined shorts, though the regular price is 79 CAD.
- Odor control
Polygiene silver-based odor control is permanent and integrated, at $39.95.
Why this is supported
Catalog verified that Polygiene is a permanent silver-based odor control treatment integrated into the fabric.
The treatment is permanent and effective for the lifetime of the product.
gamsolutions.comSilver ions actively kill microbes, and the treatment is non-nano and derived from recycled silver, with bluesign and Oeko-Tex certifications.
Polygiene is not nano silver.
gamsolutions.comThe micro-perforated underpant enhances airflow to complement the odor control. This technology is typical in shorts originally priced at $79 CAD, now at $39.95 sale price.
- Fabric quality
Nylon-spandex ribbed fabric retains shape with under 2% deformation after 100 cycles, at $39.95.
Why this is supported
Catalog verified that the nylon-spandex ribbed fabric offers shape retention under 2% deformation after 100 cycles, while polyester/spandex blends exhibit 4-6%.
80% Nylon/20% Spandex | <2% | Best shape retention | Yoga, compression
yunenx.comNylon also provides Martindale abrasion ratings of 25,000–80,000+ cycles, far exceeding polyester's typical 15,000–20,000 cycles.
15,000-20,000 cycles
seller.alibaba.comThe ribbed knit construction ensures crosswise stretch and edge stability, and nylon's moisture regain of 4-4.5% actively pulls sweat away for a cooling effect.
Nylon's standard moisture regain is around 4% to 4.5%, giving it excellent hydrophilic properties.
anrudatextile.comRibbed texture adds a depth and premium hand feel.
Rib knit fabric by its nature has a texture and depth that flat fabrics do not.
oursocialfabric.ca- Zip pocket
Hidden zip pocket fits keys or some phones, a feature of $90 trail shorts, at $39.95.
Why this is supported
Catalog verified that the hidden rear zipper pocket is designed to hold small items, and according to independent source, can fit some phones.
while the fifth rear zipper pocket can fit some phones
irunfar.com- Chafe protection
Built-in micro-perforated underpant and 8.25-in inseam prevent chafing, at $39.95.
Why this is supported
Catalog verified that the built-in micro-perforated underpant provides coverage and support, similar to other mesh liners.
Internal mesh liner provides added coverage & support
underarmour.comCombined with the 8.25-inch inseam, which is longer than typical 5-inch shorts and beyond the 7-inch protection threshold, the shorts prevent inner-thigh chafing.
If you suffer from inner thigh chafing, then one of the simplest solutions is to wear longer running shorts.
asics.comThe 7-inch inseam is often recommended as a minimum for chafe protection.
The 7-inch inseam offers a noticeable increase in coverage, hitting around the mid-thigh on most men.
eathealthy365.com- Fit
Ribbed knit's stretch, recovery, and non-curling edges prevent ride-up and chafing.
Why this is supported
The rib knit fabric is engineered for fit:
Rib knit is often very stretchy in the crosswise direction (selvage to selvage), but usually has little to no stretch in the lengthwise direction.
oursocialfabric.caThis crosswise stretch permits lateral expansion with each stride while the lengthwise stability prevents ride-up. After stretching,
the rib knit will spring back to its original shape instead of becoming distorted and stretched out.
seamwork.comAnd the fabric's edges do not curl:
Unlike a jersey, when pulled, the edges of rib knit do not curl.
oursocialfabric.caThis keeps the hem firmly in place and eliminates a common source of chafing. The combination of directional stretch, recovery, and edge stability creates a second-skin fit that stays secure and non-distracting.
- Comfort
Ribbed knit's texture and cooling wicking enhance comfort against skin.
Why this is supported
The ribbed knit's texture gives it a substantial feel:
Rib knit fabric by its nature has a texture and depth that flat fabrics do not.
oursocialfabric.caThis tactile quality contributes to the premium second-skin sensation. Meanwhile, the nylon content wicks moisture and cools the skin:
Nylon has excellent thermal conductivity. While absorbing sweat, it can rapidly draw heat away from the body surface, possessing a natural contact cooling effect.
anrudatextile.comThis keeps the short feeling cool and less clammy during runs, further enhancing the close-fitting, comfortable experience.
- Inseam length
8.25-inch inseam exceeds the 7-inch threshold identified for chafe protection.
Why this is supported
Running guides confirm that longer shorts prevent chafing. ASICS advises,
If you suffer from inner thigh chafing, then one of the simplest solutions is to wear longer running shorts.
asics.com. The 8.25-inch inseam exceeds the 7-inch length that another guide identifies as a key coverage threshold:
The 7-inch inseam offers a noticeable increase in coverage, hitting around the mid-thigh on most men.
eathealthy365.comThis ensures that the shorts provide the intended barrier.
- Underpant
Built-in micro-perforated underpant reduces chafing during long runs.
Why this is supported
The product description confirms that the
built-in micro-perforated underpant is designed to provide light support and reduce chafing during long runs.
How does the built-in micro-perforated underpant perform in terms of support and moisture management during long runs?This active feature pairs with the long inseam for two-layer protection.
- Knit stability
Ribbed knit resists curling and ride-up to reduce chafing points.
Why this is supported
The ribbed knit fabric
does not curl at the edges, so it lies flat and stays neat
suertefabric.com, eliminating seam irritation. Additionally, the knit's construction
Rib knit is often very stretchy in the crosswise direction (selvage to selvage), but usually has little to no stretch in the lengthwise direction
oursocialfabric.ca, which prevents the shorts from riding up and keeps the leg openings anchored.
- Ventilation
Micro-perforations wick sweat vapor to reduce chafing and odor.
Why this is supported
The micro-perforations actively wick sweat vapor away from the skin,
carrying away sweat vapor that would otherwise create a humid breeding ground for bacteria
Benefits of a micro-perforated inner brief — polygiene_x_perforation_synergy. This reduces humidity and the risk of chafing and odor.
- Value
$39.95 sale price delivers 2-in-1 support and a hidden pocket, surpassing budget mesh-lined shorts.
Why this is supported
At the sale price of $39.95, these shorts provide the support of 2-in-1 shorts for a fraction of the cost,
effectively giving you a compression-style liner without the $70+ premium typical of 2-in-1 designs
Price and feature value among running shorts — built_in_micro_perforated_underpant_vs_mesh_brief_liners. Another source notes the price
$39.95 CAD sale price collapses that premium into the range of basic $25–$40 gym shorts
Price and feature value among running shorts — 79_cad_39_95_cad_more_than_half_off_a_premium_build. Additionally, the hidden rear zip pocket adds secure storage not found in standard budget shorts.
- Stretch recovery
Nylon-blend fabric deforms less than 2% after 100 stretch cycles, with snap-back recovery.
Why this is supported
The 80/20 nylon/spandex blend in the ribbed jersey deforms less than 2% after 100 stretch cycles, as per data showing:
80% Nylon/20% Spandex | <2% | Best shape retention | Yoga, compression
yunenx.com. Moreover, the rib knit construction provides crosswise stretch with snap-back recovery, while lengthwise stretch is minimal to prevent riding up, consistent with:
Rib knit is often very stretchy in the crosswise direction (selvage to selvage), but usually has little to no stretch in the lengthwise direction.
oursocialfabric.ca- Abrasion resistance
Nylon-blend fabric achieves 25,000–80,000 Martindale cycles versus polyester's 15,000–20,000.
Why this is supported
Textile data shows nylon's abrasion resistance vastly exceeds polyester's: nylon can reach 25,000–80,000+ cycles on the Martindale test, whereas polyester typically rates just
15,000-20,000 cycles
seller.alibaba.com.
- Moisture management
Nylon-blend fibers actively wick moisture and provide a cooling effect during runs.
Why this is supported
Nylon's hydrophilic properties enable it to actively pull sweat into the fiber and draw heat away from the skin, as noted by textile experts:
Nylon's standard moisture regain is around 4% to 4.5%, giving it excellent hydrophilic properties.
anrudatextile.comThis moisture wicking combined with nylon's high thermal conductivity creates a contact-cooling sensation.
- Handfeel
Nylon-blend fabric has a smooth, silky, cool-to-the-touch surface.
Why this is supported
The fiber composition gives the ribbed jersey a luxurious feel described as:
Smooth, silky, cool, sometimes “oily”
fabric-supplier.com. This distinguishes the shorts from the drier, more plastic-like handfeel of polyester.
- Environmental sourcing
Silver chloride from recycled silver reduces the need for newly mined silver.
Why this is supported
The silver salt used is
produced from recycled silver.
gamsolutions.comThis means the odor-control chemistry repurposes existing material rather than requiring new mining.
- Freshness
Shorts stay fresh-smelling for multiple runs without washing.
Why this is supported
The shorts combine two independent freshness systems: micro-perforations in the built-in liner vent moisture to reduce bacterial growth, and Polygiene treatment kills remaining odor-causing microbes.
The micro-perforations enhance airflow for moisture management, while Polygiene® technology actively controls odor, helping you stay fresh over extended distances.
How does the built-in micro-perforated underpant perform in terms of support and moisture management during long runs?This synergy, supported by the 8.25-inch inseam that keeps the short comfortably in place, lets the garment last through several runs before a wash is needed.
- Polygiene lifetime
Polygiene treatment stays active for the lifetime of the shorts.
Why this is supported
Polygiene silver chloride is embedded into the fabric fibers during manufacturing, so it does not wash off.
integrated into the fabric, so freshness is built-in for the lifetime of the garment
polygiene.comThis means the odor-control benefit persists for the entire usable life of the shorts, regardless of washing frequency.
- Sustainability
Polygiene uses recycled silver, adding an eco-friendly aspect.
Why this is supported
The silver chloride used in Polygiene is not mined but sourced from recycled silver.
Polygiene is based on silver salt (silver chloride) produced from recycled silver.
gamsolutions.comThis aligns with the shorts' recycled polyester mesh to reduce environmental impact.
- Hidden pocket
Rare under $50, its zippered pocket matches premium trail shorts and replaces a belt for keys/cards.
Why this is supported
The hidden zippered pocket is a premium feature: research shows it is
A zippered rear waistband pocket, absent from nearly every short in the sub-$50 CAD segment, matches the storage capability of flagship trail shorts like the Patagonia Strider Pro ($90 USD)
Price and feature value among running shorts — hidden_zip_pocket_behindand
allowing you to carry a key or card without bulge or bounce, which eliminates the need for a separate belt or armband on shorter runs
Price and feature value among running shorts — hidden_zip_pocket_behind.
- Shape retention
Ribbed knit stretches and snaps back; edges don't curl, hems lie flat.
Why this is supported
The ribbed knit construction is engineered to stretch with each stride and recover its original shape. Additionally, the knit edges resist curling, ensuring the hems and seams lie flat against the skin and resist fraying. This is supported by two independent sources:
the rib knit will spring back to its original shape instead of becoming distorted and stretched out.
seamwork.comAnd
Unlike a jersey, when pulled, the edges of rib knit do not curl.
oursocialfabric.ca- Durability
Polygiene treatment bonded into fibers; odor control effective for garment's lifetime.
Why this is supported
The Polygiene silver-ion treatment is permanently integrated into the fibers, ensuring that the antimicrobial and odor-fighting properties do not diminish with washing. The manufacturer states:
integrated into the fabric, so freshness is built-in for the lifetime of the garment
polygiene.com- Safety
Polygiene is non-nano, non-irritating, and microbiome-safe for prolonged wear.
Why this is supported
Polygiene is not nano silver.
gamsolutions.comPolygiene is active only on the material’s surface and does not interfere with bacteria naturally found on the skin, even when used for long periods of time
gamsolutions.com. Additionally, it has passed dermal sensitivity testing, verifying it is non-irritating for the built-in underpant's prolonged contact.
Image Analysis
3 images- 01
Product
A pair of fitted black athletic shorts visible from front on a standing model; mid-thigh length with smooth surface and contoured fit over the thighs.
- SilhouetteForm-fitting shorts that extend to about mid-thigh and follow the contour of the model's upper legs.
1 region
x 0.38 · y 0.44 · w 0.24 · h 0.18 (high) - Material appearanceSmooth, matte stretch fabric with no visible texture, pattern, or printed graphics on the visible surface.
1 region
x 0.38 · y 0.44 · w 0.24 · h 0.18 (high) - Waist and hem coverageTop of the shorts is partially covered by the model's shirt so waistband details are not visible; leg openings end with a straight, flat hem at mid-thigh.
1 region
x 0.38 · y 0.44 · w 0.24 · h 0.10 (high)
Other
Studio lifestyle shot showing a standing male model wearing a grey patterned T-shirt, a black running vest with visible 'SALOMON' text, a black cap worn backwards, red reflective sunglasses, striped crew socks and dark trail shoes; soft pink gradient background and visible studio shadow.
- Running vestBlack running vest with front bungee cord detail and small high-contrast logos; vest straps and pockets are visible over the shirt.
1 region
x 0.36 · y 0.14 · w 0.28 · h 0.20 (high) - Vest text“SALOMON”
1 region
x 0.42 · y 0.18 · w 0.06 · h 0.03 (high) - T-shirtShort-sleeve grey patterned T-shirt with a marbled or mottled print visible across the chest and sleeves.
1 region
x 0.30 · y 0.17 · w 0.40 · h 0.18 (high) - Headwear and eyewearBlack cap worn backwards and red-orange reflective sports sunglasses covering the eyes.
1 region
x 0.46 · y 0.02 · w 0.16 · h 0.09 (high) - Socks and shoesBlack crew socks with two white horizontal stripes above the ankle and dark trail running shoes with brown laces.
1 region
x 0.36 · y 0.60 · w 0.29 · h 0.33 (high) - Pose and compositionFull-body studio pose with hands on hips, frontal three-quarter facing camera, even soft lighting and a visible shadow cast to the left on the floor.
- BackgroundEven, soft gradient background shifting from pale pink at top to a slightly warmer tone near the floor.
Colors
matte black· shorts#12161C- SilhouetteForm-fitting shorts that extend to about mid-thigh and follow the contour of the model's upper legs.
- 02
Product
Front view of a pair of fitted, ribbed black running shorts worn by a model; mid-thigh length with a slim elastic waistband and visible vertical ribbed texture.
- Silhouette and fitSlim, form-fitting short with a straight leg ending at mid-thigh, shown on a model from the waist to just below the knees.
1 region
x 0.13 · y 0.12 · w 0.74 · h 0.49 (high) - WaistbandElastic waistband sitting at the natural waistline, same ribbed fabric as the shorts with a horizontal seam at the top.
1 region
x 0.21 · y 0.09 · w 0.58 · h 0.07 (high) - Fabric textureDistinct vertical ribbed texture running continuously from waistband to hem across the front panels.
1 region
x 0.18 · y 0.12 · w 0.64 · h 0.40 (high) - Center front seamSubtle vertical center-front seam visible in the crotch area dividing left and right panels.
1 region
x 0.44 · y 0.18 · w 0.12 · h 0.26 (high) - Leg hem finishNarrow folded hem at the end of each leg with a slightly denser stitch line, matching the shorts fabric.
2 regions
x 0.18 · y 0.48 · w 0.28 · h 0.06 (high); x 0.54 · y 0.48 · w 0.28 · h 0.06 (high)
Other
Studio shot showing a model wearing the shorts; plain light background and visible socks and running shoes used for styling; even front lighting with soft shadow on the right.
- Model stylingModel is standing facing forward wearing white mid-calf ribbed socks and black running shoes; hands relaxed at sides.
1 region
x 0.05 · y 0.08 · w 0.90 · h 0.84 (medium) - Background and lightingPlain light gray to white seamless background with soft, even frontal lighting and a faint shadow cast to the right of the model.
- Image cropImage is cropped at the model's waist near the top and just below the knees at the bottom, centering the shorts.
Colors
matte black· shorts#0E0D0E- Silhouette and fitSlim, form-fitting short with a straight leg ending at mid-thigh, shown on a model from the waist to just below the knees.
- 03
Product
Rear view of a pair of black ribbed running shorts worn by a model; visible features include a high elastic waistband with a small horizontal zip pocket at center back and vertical ribbed knit texture across the short panels ending above the knee.
- Overall silhouetteFitted mid-thigh cycling-style shorts with a straight hem that falls above the knee, shown on a standing model from the rear.
1 region
x 0.22 · y 0.16 · w 0.56 · h 0.56 (high) - Fabric textureDistinct vertical ribbed knit texture running continuously from waist through the leg panels.
1 region
x 0.28 · y 0.20 · w 0.44 · h 0.44 (high) - Waistband and pocketWide elastic waistband with a centered horizontal zippered pocket at the back waist; pocket seam and zipper track run parallel to the top edge of the waistband.
1 region
x 0.28 · y 0.12 · w 0.44 · h 0.10 (high) - Zipper pull detailSmall metallic zipper pull visible at the left side of the back pocket zipper.
1 region
x 0.38 · y 0.15 · w 0.04 · h 0.03 (medium) - Center back seamVertical center-back seam running from the waistband down the rear panel, visible through the ribbed fabric.
1 region
x 0.48 · y 0.18 · w 0.02 · h 0.42 (high)
Other
Studio product shot showing model from behind against a neutral light gray backdrop, cropped at mid-torso and just below the feet; visible props include white ribbed socks and black running shoes. Even lighting with soft shadow under shoes.
- Shot compositionRear-facing full-length view of a model cropped at mid-torso and just below the soles, centered in frame against a plain background.
- BackgroundSmooth light gray studio background with subtle floor line visible near the model's ankles.
- Props - socks and shoesModel wears ribbed white crew socks and black athletic shoes placed on the studio floor; these items are not part of the shorts.
1 region
x 0.30 · y 0.70 · w 0.42 · h 0.24 (high) - Lighting and shadowEven, diffuse lighting with soft, minimal shadows under the shoes and slight contouring on the legs.
Colors
deep black· shorts body#0E0C0Emetallic silver· zipper pull- Overall silhouetteFitted mid-thigh cycling-style shorts with a straight hem that falls above the knee, shown on a standing model from the rear.