Bluearbor Athletics Norway: Hiking and Trekking Range Wash Durability Evaluation
Bluearbor Athletics is a Norway-based brand whose hiking and trekking range is one of its most demanding programmes. Durability is where most functional claims fail. We washed the brushed thermal knit fifty times under domestic conditions and re-measured after every ten cycles for Bluearbor Athletics.

Bluearbor Athletics: Brushed Thermal Knit in use during multi-day walking with a loaded pack
Evaluation background
The programme covers trekking shirts, trousers and mid layers, used for multi-day walking with a loaded pack. The environment is sun, wind and abrasive contact at the shoulders and the requirement written into the brief was durability with sun protection at altitude. 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 | 310 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
Washing ran at 30 degrees with a standard reference detergent and no softener, then tumble dried on low. This mirrors what customers actually do rather than what a care label optimistically suggests.
Performance by cycle
The fabric started at thermal resistance above 0.08 m2K/W and held above 90% of that value through 30 cycles. The decline after cycle 40 was gradual, which is the behaviour we want: a slow change, not a sudden failure.

Evaluation session with the Bluearbor Athletics team
Appearance
Pilling stayed at grade 4 or above and there was no visible shade shift against the retained reference. Surface comfort after washing mattered most to Bluearbor Athletics, so hand was scored by a panel at every interval.
Conclusion on service life
On this evidence the garment keeps its function for a full retail season of weekly washing, and ISO 11092 remains a valid claim for that period.

Test records and inspection notes for the Hiking and Trekking Range
Scorecard
| Criterion | Result |
|---|---|
| Function after 30 washes | 4.4 / 5 |
| Appearance retention | 4.9 / 5 |
| Pilling grade | 4.5 / 5 |
| Hand retention | 4.7 / 5 |
| Shade | 4.3 / 5 |
“This is the first season with no comfort complaints in this category.” — Bluearbor Athletics Technical Team

Packed bulk rolls before shipment to Norway
Verdict and recommendation
Fifty cycles is a reasonable service life for this product class, and the brushed thermal knit stayed inside tolerance throughout. Care wording should be printed exactly as tested. For Bluearbor Athletics 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.