
I.FIV5
Built-In Liner Stretch Jersey Short Length: 4.5"
These men's built-in liner stretch jersey shorts from i.FiV5 by Simons are designed for racquet sports and athletic training. They have a 4.5-inch (11.5 cm) inseam, adjustable drawstring waist, slant front pockets, a zip back pocket, and wide split hems. The outer jersey is a full-stretch nylon/spandex blend (77% nylon, 23% spandex), and the built-in bike liner features side pockets, micro perforations at the crotch, and Polygiene odor-control technology.
- Material
- Nylon blend
- Gender
- unisex
- Style
- activewear, sporty
- Category
- Apparel & Accessories > Clothing > Shorts
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.
- Pockets
- A reviewer confirms side pockets securely hold an iPhone 14 Pro during activity.
- Care Instructions
- Machine wash cold and hang to dry; do not bleach. 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 soft against the skin while providing full stretch for athletic movement.
- Chafe prevention
- Wicks sweat at 50–70 mm/30 min and stretches over 400%, reducing the friction that leads to chafing.
- Lab testing
- The Polygiene treatment carries bluesign, Oeko-Tex Eco-Passport, REACH, and US EPA registration, indicating it is independently audited for skin safety and environmental responsibility.
- Sustainability
- Odor control lasts the garment's lifetime and uses recycled silver.
- Four-way stretch
- The 20–23% spandex nylon jersey stretches in all directions and recovers in under one second, so it moves with deep lunges and lateral slides without restricting movement.
- Liner compression retention
- The built-in liner's 80% nylon / 20% spandex mesh showed less than 2% permanent deformation after 100 stretch-release cycles, helping it resist loss of compression during lateral cross-court movements.
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
Buying Guide
1 comparison · 9 sourcesUses
Racquet-sport sessions with a built-in liner
Made with racquet sports in mind, these full-stretch jersey shorts are designed to let you move freely during quick, dynamic play. The built-in liner, adjustable drawstring waist and side pockets support active wear, and the retailer says the Polygiene technology eliminates odour and prevents bacteria growth. Slant front pockets plus a zip back pocket give you spots to stash small items while you play.[1,2]
Product comparison
Compared within this brand.
| Built-In Liner Stretch Jersey Short Length: 4.5": Choose this if you want a racquet-sports-inspired 2-in-1 short: a relaxed outer layer with a built-in liner extending below the 4.5 inch inseam, made of full-stretch plump jersey in a nylon-spandex blend. It suits players who want an adjustable elastic drawstring waist, slant front pockets, a zip back pocket, a wide split hem, and Polygiene technology the brand says eliminates odour and prevents bacteria growth. Note the stretch and odor-control benefits are manufacturer claims rather than reported user experiences, and Navy/Midnight Blue is not offered in size Large.[1,2,3] | Piped Stretch Short Without Built-In Brief Length: 4.5": Choose this if you prefer a short without a built-in brief and want to pair it with your own underwear. It's a 4.5-inch-inseam athletic short in light, stretchy recycled polyester (90% recycled-polyester, 10% spandex) with Polygiene odor control, an elastic waist with an inner drawstring, and slit side-seam pockets. The retro contrast piping comes in Black, Navy/Midnight Blue, or Burgundy across sizes small to x-large.[4,5,6,7] | Perforated Stretch Short Length: 4": Choose this if you want a lightweight running short built for modern runners, with a 4-inch (10 cm) inseam and a fully perforated, stretchy fabric made from recycled polyester with a touch of spandex. It has a built-in microfibre lining, a drawcord-adjustable elastic waist, zipped front pockets, side vents at the hem, and Polygiene technology described as eliminating odour and preventing bacteria growth. It comes in sizes small to X-large in black or emerald/kelly green.[8,9] |
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.
Variants
8 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4499495 | Built-In Liner Stretch Jersey Short Length: 4.5" - Black - Small | CA$29.95CA$69.00 | Yes |
| 4499496 | Built-In Liner Stretch Jersey Short Length: 4.5" - Black - Medium | CA$29.95CA$69.00 | Yes |
| 4499497 | Built-In Liner Stretch Jersey Short Length: 4.5" - Black - Large | CA$29.95CA$69.00 | Yes |
| 4499499 | Built-In Liner Stretch Jersey Short Length: 4.5" - White - Small | CA$29.95CA$69.00 | Yes |
| 4499500 | Built-In Liner Stretch Jersey Short Length: 4.5" - White - Medium | CA$29.95CA$69.00 | Yes |
| 4499501 | Built-In Liner Stretch Jersey Short Length: 4.5" - White - Large | CA$29.95CA$69.00 | Yes |
| 4499503 | Built-In Liner Stretch Jersey Short Length: 4.5" - Navy/midnight Blue - Small | CA$29.95CA$69.00 | Yes |
| 4499504 | Built-In Liner Stretch Jersey Short Length: 4.5" - Navy/midnight Blue - Medium | CA$29.95CA$69.00 | Yes |
Documents & Data
Customer Reviews
3 total3 reviews · out of 5
Bonne qualité
Très confortable, la pochette pour le cellulaire garde le téléphone immobile.
fits slightly small
A bit snug, but feels high quality
Good
Great value