Northlane Active Portugal: Odor-Free Tennis Dresses Built on Capillary Wicking Plated Structure
Northlane Active is a Portugal-based activewear label whose tennis dresses programme sells directly to consumers and through selected retail partners. The team asked us to rebuild the fabric from scratch because the sustainability team rejected a biocidal finish that was on the first sample. The target was odour control that complied with the brand's restricted substance list.
Northlane Active: odour-control swatch set for the tennis dresses programme
The challenge
The smell built up at the built-in short and the chest band, 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. An internal compliance review before bulk booking 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 Capillary Wicking Plated Structure on a polyester with channelled cross-section base. The mechanism matters: sweat is moved to the outer face and evaporated before bacteria can break it down. Keeping the base at bonded knit with inner shorts and 210 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 with channelled cross-section fabric
Development and implementation
- Week 1: brief agreed, sweat zone mapped, target set as moisture management class above 4 with one-way transport above 300 by AATCC 195.
- 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 tennis dresses, assessed after eight hours of wear.
- Pre-production: wash durability confirmed at permanent construction benefit, care wording written as never use fabric softener, which blocks the capillaries.
- Bulk: fixed recipe, consolidated dye lots, AATCC 195 repeated on every lot.
Specification delivered
| Parameter | Value |
|---|---|
| Product | Tennis Dresses |
| Base construction | bonded knit with inner shorts, 210 GSM |
| Odour-control system | Capillary Wicking Plated Structure |
| Performance target | moisture management class above 4 with one-way transport above 300 |
| Test method | AATCC 195 |
| Service life | permanent construction benefit |
| Added cost | under USD 0.10 per garment |
| Certification | OEKO-TEX Standard 100, REACH compliant inputs |
Results
The premium tier sold through 22% faster than the previous season, and the same construction was extended into two further colourways. 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.
“The fabric still smells clean at the end of a double training day. That is the comment we get most often now.” — Northlane Active Product Team
Inline inspection and packing before the tennis dresses shipment
Key takeaway
Care instructions are part of the product. Stating the right wash conditions on the label is what keeps the measured value alive after the garment leaves the store. For Northlane Active, that turned a recurring complaint into a feature the brand could sell.
