Trailhead Union Norway: Trail Running Programme Comparison Test
Trailhead Union is a Norway-based brand whose trail running programme is one of its most demanding programmes. We tested the new upf 50+ sun protection knit against the fabric Trailhead Union used last season. Both were made into identical garments and evaluated side by side for trail running programme.
Trailhead Union: UPF 50+ Sun Protection Knit in use during long off-road efforts on mixed terrain
Evaluation background
The programme covers trail shorts, technical tees and light shells, used for long off-road efforts on mixed terrain. The environment is mud, grit, wind and rapid weather changes and the requirement written into the brief was abrasion resistance with fast drying after stream crossings. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | UPF 50+ Sun Protection Knit |
| Composition | polyester spandex with UV absorber |
| Weight | 170 GSM |
| Width | 165 cm |
| Primary function | blocks ultraviolet radiation during outdoor sessions |
| Target | UPF above 50 with UVA transmission below 5% |
| Test method | AATCC 183 |
| Additional note | protection retained when wet |
| Certification | OEKO-TEX Standard 100 |
UPF 50+ Sun Protection Knit close-up showing the fabric surface
What was compared
Construction, weight and colour were held constant. The only difference was the fabric, which is the only way a comparison tells you anything useful.
Laboratory comparison
The new fabric reached UPF above 50 with UVA transmission below 5% against AATCC 183, while the previous material missed the same target. Comfort measurements were closer, which is expected because hand had already been approved.
Evaluation session with the Trailhead Union team
Wear comparison
Over four weeks the difference appeared during mud, grit, wind and rapid weather changes. Wearers described the new version as cleaner and lighter in use, even though the scales said the two garments weighed the same.
Cost comparison
The upgrade adds a modest amount per garment. Measured against the return rate of the previous season, the change pays for itself within a single drop.
Test records and inspection notes for the Trail Running Programme
Scorecard
| Criterion | Result |
|---|---|
| Function | 4.6 / 5 |
| Comfort | 4.8 / 5 |
| Durability | 4.3 / 5 |
| Appearance | 4.5 / 5 |
| Cost efficiency | 4.6 / 5 |
“Development was transparent from the first sample and bulk matched the approval exactly.” — Trailhead Union Technical Team
Packed bulk rolls before shipment to Norway
Verdict and recommendation
The new upf 50+ sun protection knit outperformed the previous fabric on every measured criterion and we recommend switching the whole programme over. For Trailhead Union the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue AATCC 183 results with every lot so any claim can be supported with data.
