Everline Studio Portugal: Odor-Free Cycling Jerseys Built on Coffee Ground Polyester Yarn
Everline Studio is a Portugal-based activewear label whose cycling jerseys programme sells directly to consumers and through selected retail partners. The team asked us to rebuild the fabric from scratch because the garment smelled stale after a single session even straight out of the wash. The target was a fabric that stayed neutral through repeated wear between washes.
Everline Studio: odour-control swatch set for the cycling jerseys programme
The challenge
The smell built up at the back panel under the pockets, where sweat sits longest during a session. The previous fabric was a standard synthetic knit with no odour strategy, so bacteria broke the sweat down on the fabric and the smell became permanent after a few weeks. Rising returns with smell listed as the stated reason made the problem urgent: the brand needed a fix before the next bulk booking, not a new supplier search.
The fabric solution
We built the programme around Coffee Ground Polyester Yarn on a polyester filament knit base. The mechanism matters: micronised spent coffee grounds trap odour molecules and add recycled content. Keeping the base at polyester knit with mesh side panels and 130 GSM meant the hand, the stretch and the cover stayed exactly where the design team wanted them, because odour control changed the chemistry and the construction rather than the silhouette.
Wear trial and fit approval of the polyester filament knit fabric
Development and implementation
- Week 1: brief agreed, sweat zone mapped, target set as odour reduction above 75% with recycled content above 3% by ISO 17299-2.
- Week 2–3: laboratory knits produced and tested; add-on level adjusted until the target was met with margin.
- Week 4–5: wear trial on finished cycling jerseys, assessed after eight hours of wear.
- Pre-production: wash durability confirmed at permanent inside the fibre, care wording written as standard laundering with mild detergent.
- Bulk: fixed recipe, consolidated dye lots, ISO 17299-2 repeated on every lot.
Specification delivered
| Parameter | Value |
|---|---|
| Product | Cycling Jerseys |
| Base construction | polyester knit with mesh side panels, 130 GSM |
| Odour-control system | Coffee Ground Polyester Yarn |
| Performance target | odour reduction above 75% with recycled content above 3% |
| Test method | ISO 17299-2 |
| Service life | permanent inside the fibre |
| Added cost | a 9% yarn premium |
| Certification | OEKO-TEX Standard 100, REACH compliant inputs |
Results
Smell-related returns fell by 71% inside one season, and the style moved onto a fixed repeat recipe with test reports issued per lot. The odour value was re-measured on bulk fabric rather than on the approval sample, so the result reflects what customers actually received. The programme is now on its third repeat with the same recipe.
“We stopped apologising for smell complaints. The test report answers the question before it is asked.” — Everline Studio Product Team
Inline inspection and packing before the cycling jerseys shipment
Key takeaway
A wear trial cost two weeks and prevented a bulk mistake. Laboratory numbers predict performance, but only wearers find the complaints that reach customer service. For Everline Studio, that turned a recurring complaint into a feature the brand could sell.
