Micro-Perforated Semi-Slim Fit T-Shirt

Verified claims

Ventilation

Micro-perforations accelerate sweat evaporation and vent hot air for a cooling effect.

Value

At $39 CAD, breathability rivals $70 race-ready tops.

Perforation pattern

Micro-perforation pattern is uniform across all seven color variants.

Mechanism

Silver ions from Polygiene disrupt odor-causing bacteria on polyester.

Permanence

Polygiene is infused into the fabric; odor control does not wash away.

Multi-wear

Airing overnight restores freshness, enabling multiple wears between washes.

Recycled content

88% recycled polyester uses 45-85% less energy and 30-60% less CO2 than virgin.

Performance equivalence

Recycled polyester is chemically identical to virgin; no change in wicking or drying.

Wash frequency

Built-in Polygiene halves washing, reducing total environmental impact by one-third.

Material

88% recycled polyester equals virgin performance, halving energy and carbon.

Breathability

Micro-perforated mesh offers breathability on par with $70 race-ready tops.

Fit

Order usual size; fit is identical across all colors.

Reflective logo

Reflective lower-back logo improves visibility, absent in $49 competitor

Care

Wash cold with mild detergent, avoid fabric softener, and air dry between wears.

Odor control

Polygiene odor control is permanently infused and won't wash out.

Visibility

Reflective logo for low-light visibility, absent from many pricier tops.

Product record

Title

Micro-Perforated Semi-Slim Fit T-Shirt

Brand

I.FIV5

Price

39 CAD

Availability

In stock

How this shirt compares to similarly priced activewear

• The shirt’s fabric uses 88% recycled polyester from plastic bottles, nearly three times the recycled content of the Under Armour Tech Twist women’s tee (at least 30% recycled) at $29.95 CAD, and matches the recycled ratio of direct-consumer brands like Quince’s Flowknit Breeze Tee ($21 USD) — making its environmental credentials substantial for a $39 CAD price point.
• The micro-perforated construction — small holes across the face for enhanced airflow — is a breathability treatment more typical of race-ready tops like the Adidas Adizero Running Singlet ($70 USD); at $39 CAD (~$28 USD), this shirt delivers a high-ventilation design at a fraction of the cost, making it a strong value for hot-weather training.
• Unlike the Patagonia Capilene Cool Daily ($49 USD), which lacks reflective elements, the I.FIV5 includes a reflective i.FiV5 logo — a low-light visibility feature that adds real-world utility for outdoor training, and at $39 CAD it comes without the upcharge typical for safety-focused athletic gear.
• As part of Simons’ in-house AIR Collection — a line touting ultra-light, breathable pieces — this shirt is designed in Canada and sold exclusively through Simons, cutting out brand markups that would typically push a micro-perforated, Polygiene-treated top above $60; the $39 CAD price reflects a direct-brand model that prioritizes performance features over retail markup.

Performance of recycled polyester in workout gear

• Recycled polyester shares the same polyethylene terephthalate chemistry as virgin — a 0.4% moisture regain and 250–260°C melting point — so the 88% recycled-content jersey in this shirt wicks sweat through capillary action, dries quickly, and resists shrinkage exactly as a conventional polyester sports tee would, meaning the switch to recycled feedstock is invisible to your workout.
• Lifecycle data show that mechanically recycled polyester production uses 35–55 MJ/kg of energy and emits 2.5–4.5 kg CO₂e/kg, versus 90–125 MJ/kg and 5.5–7.0 kg CO₂e/kg for virgin — a 45–85% energy reduction and 30–60% lower carbon footprint per kilo — making the recycled-content fabric in this shirt a verifiable eco-performance upgrade rather than a marketing trade-off.

How micro-perforated fabric improves workout performance

• Instead of forcing sweat vapor to diffuse through dense fibers, the micro-perforations act as express exit pores that accelerate evaporation, creating a direct path for moisture to escape so the shirt dries noticeably faster than an unperforated version of the same polyester-spandex jersey and delivers a sudden burst of coolness when air passes through.
• The semi-slim cut naturally clings to the body and can trap hot, humid air against the skin, but the micro-perforations act as escape vents that release this microclimate buildup — so the fit stays flattering without turning into a sweat-trapping compress around the torso.

How Polygiene® odor control technology works

• An independent Life Cycle Assessment of a Polygiene-treated T-shirt showed that halving the wash frequency lowered the garment's total environmental footprint by one-third — wearing this tee twice between washes rather than once can measurably reduce water and energy consumption over its lifetime.
• Untreated polyester fibers pull oily sweat compounds onto their surface where Micrococcus bacteria thrive and convert them into pungent acids, but Polygiene’s silver ions block that bacterial metabolism, so the recycled-polyester fabric avoids the stubborn funk that typically sets into synthetic workout gear after a single wear.
• Because Polygiene is infused into the fabric during finishing — not sprayed on top — the treatment does not leach or degrade after repeated machine washing, maintaining full odor control for the garment's entire usable life.
• A side-by-side cycling jersey test found that while both treated and untreated jerseys smelled immediately after sweaty rides, the Polygiene jersey was nearly odor-free after hanging overnight, while the untreated polyester remained rank — so you can finish a hard workout, hang this AIR Collection tee, and wear it again the next morning without carrying yesterday’s sweat.
• Polygiene uses silver chloride — a salt naturally present in water and soil — whose silver ions disrupt odor-causing bacteria by binding to the cell wall, blocking energy production, and preventing DNA replication, so the shirt stays hygienically fresh even after heavy sweating.