I.FIV5
Long-Sleeve Perforated-Back T-Shirt
This long-sleeve T-shirt from the i.FiV5 PERFORMANCE collection is a fitted athletic top made from a soft stretch microfibre jersey in a recycled polyester blend. It features a perforated back panel for enhanced breathability, Polygiene® technology to eliminate odor and inhibit bacteria growth, a crew neck, long raglan sleeves, and a reflective logo. Designed in Canada, it is suitable for high-intensity workouts and everyday athletic wear.
- Material
- Soft stretch microfibre jersey in a recycled polyester blend
- Gender
- unisex
- Style
- activewear, athleisure
- Category
- Apparel & Accessories > Clothing > Activewear
Color
Size
Specifications
Performance long-sleeve T-shirt with breathable perforated back and odor-control technology.
Breathable perforated back, Polygiene odor elimination, reflective logo, raglan sleeves
- Material
- Soft stretch microfibre jersey in a recycled polyester blend
- Style
- activewear, athleisure
- Occasion
- workout, sports-event
- Gender
- unisex
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Activewear
Additional Attributes
- soft stretch microfibre jersey
- recycled polyester blend
- perforated back for greater breathability
- Polygiene odor elimination technology
- crew neck
- long raglan sleeves
- reflective i.FiV5 logo
- designed in Canada
- performance collection
Product Insights
The I.FIV5 Long-Sleeve Perforated-Back T-Shirt uses a close-fit bellows effect to expel hot air through back perforations, aided by raglan sleeves and a wicking athletic fit for HIIT and weightlifting, while Polygiene anti-odor treatment permits several days of use between washes, reducing environmental impact by a third when skipping every other wash, though the perforated back may reveal skin or a sports bra, and care requires cold gentle washing without fabric softener and low heat drying to preserve the treatment; the shirt is made of 88% recycled polyester and 12% spandex, offering the same odor-control technology as Patagonia and Arc’teryx for $49 CAD, a $9 premium over a basic UA Tech but with four performance upgrades.
- Ventilation
Close-fit bellows effect pumps hot air out through back perforations.
Why this is supported
The close fit creates a bellows effect:
the fabric flexes, forcing hot, moisture-laden air out through the micro-perforations and drawing in cooler ambient air.
How perforated backs improve breathability — close_fit_bellows_effectThis pump only works with a snug fit—
The micro-perforations are limited to the back panel,
the body’s primary heat and sweat release area, while leaving the front solid and opaque.
How perforated backs improve breathability — back_only_micro_perforationTo prevent the perforations from saturating, the fabric is a
soft stretch microfibre jersey is a recycled polyester blend, whose hydrophobic fibers inherently wick moisture off the skin and dry in a fraction of the time of cotton.
How perforated backs improve breathability — quick_dry_recycled_polyester_microfibre- Odor control
Polygiene anti-odor treatment enables several days of wear between washes.
Why this is supported
The anti-odor treatment uses Polygiene, which
permanently inhibits the growth of odor-causing bacteria that proliferate in the warm, moist micro-climate created behind a close-fitting back panel.
How perforated backs improve breathability — polygiene_biostatic_finish- Safety
Polygiene treatment is safe for skin and does not disrupt the natural microbiome.
Why this is supported
Polygiene's safety testing confirms the product is safe for prolonged skin contact and does not interfere with the skin's natural microbiome:
All our treatments have undergone extensive sensitivity testing and are completely safe – even when used for long periods. Polygiene® StayFresh is only active in the material so it doesn’t interfere with any natural bacteria on the skin.
polygiene.com- Sustainability
Skipping every other wash reduces the garment's total environmental impact by a third.
Why this is supported
Polygiene's permanent odor control enables less frequent washing, which a Lifecycle Assessment shows significantly reduces environmental impact:
a recent LifeCycle Assessment (LCA) for a Polygiene-treated T-shirt demonstrated that skipping every other wash reduced the garment’s total environmental impact by a third.
polygiene.com- Environmental benefit
Wearing twice between washes cuts environmental impact by one third.
Why this is supported
A Polygiene LifeCycle Assessment (LCA) found that
skipping every other wash reduced the garment’s total environmental impact by a third.
polygiene.com.
- Brand validation
Same Polygiene odor-control technology as Patagonia, Arc'teryx, and The North Face.
Why this is supported
The same
Polygiene odor control technology is available in clothing made by Outdoor Research, Arc’teryx, La Sportiva, and Patagonia.
gearjunkie.com. This validates that the I.FIV5 shirt uses an odor-control technology trusted by premium outdoor brands.
- Care
Cold gentle wash, no fabric softener, low heat or hang dry to preserve Polygiene.
Why this is supported
To maintain the Polygiene treatment and fabric integrity, the manufacturer recommends
machine washing in cold water on a gentle cycle with mild detergent, avoiding fabric softener to preserve the Polygiene treatment. Tumble dry on low heat or hang dry.
What is the recommended care routine (e.g., machine wash temperature, drying instructions) to maintain the Polygiene treatment and fabric integrity?- Material
88% recycled polyester, 12% spandex with Polygiene treatment same as Arc’teryx and Patagonia.
Why this is supported
Polygiene is an antimicrobial treatment used by premium outdoor brands. The I.FIV5 shirt incorporates the exact same technology:
Polygiene odor control technology is available in clothing made by Outdoor Research, Arc’teryx, La Sportiva, and Patagonia.
gearjunkie.comThe treatment is permanently bonded:
According to the company Polygiene silver salt is bonded to the fabric at the factory and won’t wash out for the life of the garment.
gearjunkie.comField testing confirms its effectiveness; after eight consecutive days of wear, the shirt smelled only as bad as a non-Polygiene shirt after a single run:
I’d say the shirt smelled as bad as a non-Polygiene shirt might after one long run.
outsideonline.com- Environmental footprint
Wearing twice between washes cuts total environmental impact by a third.
Why this is supported
A lifecycle assessment of Polygiene-treated garments found that
a recent LifeCycle Assessment (LCA) for a Polygiene-treated T-shirt demonstrated that skipping every other wash reduced the garment’s total environmental impact by a third.
polygiene.comCombined with the recycled polyester construction, this makes the I.FIV5 shirt a lower-impact choice than standard synthetics.
- Value
Four performance upgrades over UA Tech long sleeve for only $9 more.
Why this is supported
The I.FIV5 includes
PolygieneTM technology that eliminates odour and prevents bacteria growth
modesens.comwhere the UA Tech only offers
UA Tech™ fabric is quick-drying, ultra-soft & has a more natural feel
underarmour.com. It adds
Raglan sleeves for greater freedom of movement
modesens.com, a perforated back for ventilation, and a reflective logo. Polygiene is the same technology found in premium base layers:
Polygiene odor control technology is available in clothing made by Outdoor Research, Arc’teryx, La Sportiva, and Patagonia.
gearjunkie.comAt $49 CAD versus the UA Tech at $40, the I.FIV5 offers four extra performance features for a small price premium.
- Coverage tradeoff
Perforated back improves cooling but may reveal underlayer.
Why this is supported
The perforated back panel improves breathability but
The perforated back panel may show skin or a sports bra underneath
Is the fabric opaque enough to wear alone, or is it intended as a layering piece?.
- Raglan sleeves
Raglan sleeves prevent shoulder seam binding during overhead presses, pull-ups, and kettlebell swings.
Why this is supported
The raglan sleeve design eliminates the shoulder seam, as confirmed by independent research:
Raglan sleeves for greater freedom of movement
modesens.comThis prevents fabric binding and ride-up during overhead presses, pull-ups, and kettlebell swings.
- Athletic fit
Close-fitting design minimizes fabric movement during HIIT and weightlifting.
Why this is supported
The brand confirmed the fit is designed to be close-fitting for athletic performance:
The fit is designed to be close-fitting for athletic performance, consistent with the Performance collection's activewear purpose.
Is the fit designed to be close-fitting or relaxed for athletic performance?This minimizes fabric movement during dynamic exercises like HIIT and weightlifting.
- Back panel sheerness
Back perforations reveal skin or a sports bra.
Why this is supported
The front remains fully opaque while
The perforated back panel may show skin or a sports bra underneath
Is the fabric opaque enough to wear alone, or is it intended as a layering piece?. This
selective placement delivers active cooling without the full-transparency compromise of all-over perforated shirts
How perforated backs improve breathability — back_only_micro_perforation. The close-fitting cut keeps the panel flush against the skin, so the see-through effect is consistent.
- Wicking
Textured yarns wick sweat via capillary action, keeping fabric dry.
Why this is supported
The recycled polyester microfibre jersey uses textured yarns that form micro-capillaries.
Through capillary action, the surface tension of the liquid (your sweat) pulls it along these tiny tubes, spreading it thinly across a large surface area of the fabric.
xiaorangroup.comThis wicking action prevents the shirt from becoming heavy or clinging to the skin.
- Dry time
Dries in under 30 minutes after a high-heart-rate session.
Why this is supported
By converting sweat into a thin film, the fabric accelerates evaporation.
often under 30 minutes after a high‑heart‑rate session.
Performance of recycled polyester in activewear — capillary_wicking_rapid_evaporationThis is significantly faster than cotton or standard polyester tees.
Image Analysis
3 images- 01
Product
Black long-sleeve crewneck athletic top with raglan sleeves, fitted torso, and a small square logo near the lower left hem; shown on a model from the front.
- Overall silhouetteForm-fitting long-sleeve top with a straight hem that sits at the model's hip; torso is smooth and close to the body.
1 region
x 0.18 · y 0.18 · w 0.64 · h 0.62 (high) - NecklineClose-fitting crew neckline with a narrow topstitch finish.
1 region
x 0.36 · y 0.03 · w 0.28 · h 0.10 (high) - Sleeve constructionRaglan-style long sleeves that are slim and extend to the wrists; left sleeve is raised across the top of the frame in the model pose.
2 regions
x 0.00 · y 0.08 · w 0.46 · h 0.22 (high); x 0.54 · y 0.14 · w 0.36 · h 0.38 (high) - Seaming detailVisible raglan seam lines running from the neckline toward the underarm on both sides.
1 region
x 0.34 · y 0.06 · w 0.34 · h 0.20 (high) - Lower-left hem logoSmall square reflective or tonal logo located near the lower-left front hem.
1 region
x 0.24 · y 0.66 · w 0.04 · h 0.04 (medium) - Fabric appearanceSmooth, slightly lustrous knit consistent with performance fabric; no visible texture or pattern.
Other
Studio product shot on a model against a plain light background; model pose has left arm raised behind head, cropped at mid-thigh showing complementary shorts; even soft lighting with minimal shadow.
- Model pose and framingFrontal view of a model from upper thighs to top of head with left arm raised so the elbow extends out of frame; image centered on torso.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Background and lightingUniform light gray to off-white seamless background with soft, even studio lighting and minimal cast shadows.
- Additional clothing visiblePair of purple athletic shorts visible below the shirt hem; not described as product features.
1 region
x 0.20 · y 0.76 · w 0.60 · h 0.20 (high)
Colors
deep black· body and sleeves#0E0D12- Overall silhouetteForm-fitting long-sleeve top with a straight hem that sits at the model's hip; torso is smooth and close to the body.
- 02
Product
Rear view of a fitted long-sleeve athletic shirt on a model showing a vertical perforated vent panel at center back, raglan sleeve seams, a shallow crew neckline, and smooth matte stretch fabric.
- Perforated back panelVertical rectangular column of small round perforations running down the upper-to-mid center back of the shirt, aligned with the spine area and showing the model's skin through the holes.
1 region
x 0.06 · y 0.36 · w 0.18 · h 0.50 (high) - NecklineShallow crew neckline with a narrow folded binding lying flat against the nape.
1 region
x 0.08 · y 0.16 · w 0.36 · h 0.12 (high) - Raglan sleeve seamDiagonal raglan seam extending from the neckline toward the underarm across the shoulder, visible as a stitched line separating back panel and sleeve.
1 region
x 0.32 · y 0.16 · w 0.40 · h 0.30 (high) - Fabric textureSmooth, tightly knit stretch fabric with a matte finish and minimal visible texture.
1 region
x 0.00 · y 0.28 · w 0.78 · h 0.68 (high) - Fitted sleeveLong fitted sleeve contouring the arm with no visible cuff or decorative hem.
1 region
x 0.52 · y 0.28 · w 0.46 · h 0.60 (high) - Visible stitching line at shoulderNarrow topstitching visible along the raglan seam and neckline binding.
1 region
x 0.28 · y 0.14 · w 0.48 · h 0.22 (medium)
Other
Studio portrait crop showing the model from the upper back and head turned in profile; neutral light gray background and soft studio lighting produce minimal shadows.
- Shot compositionCropped rear-quarter portrait showing the model's upper back, right shoulder and profile face turned to the right; product occupies the lower-left and center of the frame.
- BackgroundUniform light gray background with no visible props or distracting elements.
1 region
x 0.78 · y 0.00 · w 0.22 · h 0.30 (high) - Model stylingModel hair pulled into a low tight bun; visible profile of face and neck above the shirt.
1 region
x 0.12 · y 0.00 · w 0.58 · h 0.36 (high) - Lighting and shadowSoft, even studio lighting with mild shadowing under the jaw and subtle highlights on the shoulder and cheek.
Colors
deep black· back panel#0D0D12deep black· right sleeve#0D0D12- Perforated back panelVertical rectangular column of small round perforations running down the upper-to-mid center back of the shirt, aligned with the spine area and showing the model's skin through the holes.
- 03
Product
Black long-sleeve fitted shirt shown from the rear with a centered vertical perforated back panel, raglan sleeve seams, crew neckline, and slightly curved hem.
- Silhouette and fitFitted long-sleeve shirt closely following the model's torso with a straight side seam and a slightly curved lower hem.
1 region
x 0.18 · y 0.18 · w 0.64 · h 0.66 (high) - NecklineShallow crew neckline with a narrow banded trim visible at the back of the neck.
1 region
x 0.38 · y 0.04 · w 0.24 · h 0.10 (high) - Sleeve constructionLong slim sleeves with raglan seams extending from the neckline to under the shoulder area.
2 regions
x 0.06 · y 0.18 · w 0.30 · h 0.64 (high); x 0.64 · y 0.14 · w 0.28 · h 0.64 (high) - Perforated back panelNarrow vertical panel of small evenly spaced perforations running down the center of the upper back, visible as a faint dotted column.
1 region
x 0.44 · y 0.14 · w 0.10 · h 0.48 (medium) - Fabric appearanceSmooth knit fabric with a matte finish and minimal surface texture; slight natural stretch indicated by gentle drape and small horizontal pull lines near the lower back.
1 region
x 0.22 · y 0.28 · w 0.56 · h 0.48 (high) - Hem stitchingVisible single-line stitched hem at the bottom edge of the shirt
1 region
x 0.20 · y 0.72 · w 0.60 · h 0.10 (high)
Other
Studio product shot showing a model in a three-quarter rear pose against a plain light background with soft, even lighting and minimal shadows.
- Model poseFemale model shown from the rear in a three-quarter profile with head turned left, hair in a bun, and left arm relaxed at the side.
2 regions
x 0.06 · y 0.00 · w 0.52 · h 0.36 (high); x 0.06 · y 0.36 · w 0.30 · h 0.64 (high) - Background and lightingUniform light gray to white seamless background with soft diffuse lighting producing minimal cast shadows.
- Visible secondary garmentLower garment in the image is a dark purple pair of pants or shorts visible at the bottom of the frame and not part of the product described.
1 region
x 0.20 · y 0.78 · w 0.60 · h 0.20 (high) - Image framingVertical crop showing the model from just above the head to the hips; no packaging or hang tags visible.
Colors
matte black· main body#0D0D0E- Silhouette and fitFitted long-sleeve shirt closely following the model's torso with a straight side seam and a slightly curved lower hem.