Everline Studio Denmark: Odor-Free Training Tees Built on Zinc-Based Deodorant Finish

Everline Studio is a Denmark-based activewear label whose training tees 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 training tees programme

The challenge

The smell built up at the underarm and the lower back, 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 Zinc-Based Deodorant Finish on a polyester/spandex knit base. The mechanism matters: zinc binds the fatty acids in sweat before bacteria can convert them into odour. Keeping the base at lightweight single jersey with 8% elastane and 135 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/spandex knit fabric

Development and implementation

• Week 1: brief agreed, sweat zone mapped, target set as odour reduction above 80% for ammonia and acetic acid 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 training tees, assessed after eight hours of wear.
• Pre-production: wash durability confirmed at 20 home washes, care wording written as wash at 30-40 degrees and dry away from direct heat.
• Bulk: fixed recipe, consolidated dye lots, ISO 17299-2 repeated on every lot.

Specification delivered

Results

Repeat orders rose by 34% year on year for the treated style, and the untreated version was retired from the range. 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.

“Their team explained the mechanism in one sentence, and the bulk fabric behaved like the sample.” — Everline Studio Product Team

Inline inspection and packing before the training tees shipment

Key takeaway

The brand's real problem was a claim it could not support. Once testing was tied to a named standard and repeated per lot, the same fabric could be defended to retailers and to customers. For Everline Studio, that turned a recurring complaint into a feature the brand could sell.