Trailhead Union Portugal: Swim School Programme Comfort and Fit Evaluation
Trailhead Union is a Portugal-based brand whose swim school programme is one of its most demanding programmes. Performance data means nothing if the garment is uncomfortable. This evaluation covers how the chlorine-resistant swim knit behaves on the body during swim school programme work.
Trailhead Union: Chlorine-Resistant Swim Knit in use during daily pool sessions for children and adults
Evaluation background
The programme covers training swimsuits, swim shorts and rash guards, used for daily pool sessions for children and adults. The environment is chlorinated water and repeated drying cycles and the requirement written into the brief was chlorine resistance with reliable shape retention. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Chlorine-Resistant Swim Knit |
| Composition | PBT / polyester / elastane |
| Weight | 210 GSM |
| Width | 160 cm |
| Primary function | holds elasticity and colour through pool exposure |
| Target | less than 15% modulus loss after 100 pool hours |
| Test method | ISO 105-E03 |
| Additional note | sunscreen and chlorine tested together |
| Certification | OEKO-TEX Standard 100 |
Chlorine-Resistant Swim Knit close-up showing the fabric surface
Fit assessment
Size sets were fitted on live models and on a fit form. Fabric extension was measured at the stress points so the pattern could be corrected before bulk cutting.
Movement testing
Wearers performed the movements specific to daily pool sessions for children and adults while panel tension was observed. No restriction was reported and recovery between movements was immediate.
Evaluation session with the Trailhead Union team
Next-to-skin comfort
Surface friction, hand and temperature sensation were scored by the panel. The fabric scored best where chlorine resistance with reliable shape retention, which is the priority Trailhead Union set for this product.
Fit retention
Garments were measured after five and twenty washes. Growth stayed within tolerance, so the fit approved in sampling is the fit the customer eventually receives.
Test records and inspection notes for the Swim School Programme
Scorecard
| Criterion | Result |
|---|---|
| Next-to-skin feel | 4.5 / 5 |
| Freedom of movement | 4.7 / 5 |
| Recovery | 4.4 / 5 |
| Fit retention | 4.6 / 5 |
| Seam comfort | 4.5 / 5 |
“Development was transparent from the first sample and bulk matched the approval exactly.” — Trailhead Union Technical Team
Packed bulk rolls before shipment to Portugal
Verdict and recommendation
Comfort and fit were confirmed in wear, and the chlorine-resistant swim knit is approved for bulk with the current pattern. For Trailhead Union the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue ISO 105-E03 results with every lot so any claim can be supported with data.
