Trailhead Union Switzerland: Ski and Snowboard Base Layers Durability and Abrasion Evaluation
Trailhead Union is a Switzerland-based brand whose ski and snowboard base layers is one of its most demanding programmes. Abrasion is the most common reason a technical garment is retired. We evaluated the brushed thermal knit against the contact surfaces found in ski and snowboard base layers.

Trailhead Union: Brushed Thermal Knit in use during long days on the mountain
Evaluation background
The programme covers base layer tops, leggings and neck gaiters, used for long days on the mountain. The environment is cold air with high exertion and sudden stops and the requirement written into the brief was warmth without bulk and no clamminess on the lift. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Brushed Thermal Knit |
| Composition | 92% polyester / 8% spandex, brushed back |
| Weight | 290 GSM |
| Width | 165 cm |
| Primary function | traps warm air without adding weight |
| Target | thermal resistance above 0.08 m2K/W |
| Test method | ISO 11092 |
| Additional note | warmth held after 30 washes |
| Certification | OEKO-TEX Standard 100 |

Brushed Thermal Knit close-up showing the fabric surface
Method
Fabric was abraded to ASTM D4966 against both a standard wool abradant and the actual contact surface used in long days on the mountain. Seam strength was tested to ISO 13936-2 in parallel.
Results
The fabric passed the agreed cycle count with no yarn breakage and seam opening stayed inside the 6 mm limit. Pilling remained at grade 4 or above at the end of the test.

Evaluation session with the Trailhead Union team
Where wear appeared
Any surface change appeared first under cold air with high exertion and sudden stops, which is expected and is why we recommend panel placement rather than a single fabric across the whole garment.
Service life estimate
On this data the garment should complete a full competitive season before appearance becomes a reason to replace it, which is the commercial target Trailhead Union set at the start.

Test records and inspection notes for the Ski and Snowboard Base Layers
Scorecard
| Criterion | Result |
|---|---|
| Abrasion cycles | 4.4 / 5 |
| Pilling grade | 4.9 / 5 |
| Seam strength | 4.5 / 5 |
| Appearance | 4.7 / 5 |
| Estimated service life | 4.3 / 5 |
“Development was transparent from the first sample and bulk matched the approval exactly.” — Trailhead Union Technical Team

Packed bulk rolls before shipment to Switzerland
Verdict and recommendation
Durability is sufficient for the intended use. Keep the current construction and revisit only if the garment moves into a higher abrasion category. For Trailhead Union the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue ISO 11092 results with every lot so any claim can be supported with data.