Kestrel Sport Sweden: Martial Arts and Grappling Range Wash Durability Evaluation
Kestrel Sport is a Sweden-based brand whose martial arts and grappling range is one of its most demanding programmes. Durability is where most functional claims fail. We washed the compression warp knit fifty times under domestic conditions and re-measured after every ten cycles for Kestrel Sport.
Kestrel Sport: Compression Warp Knit in use during grappling and repeated mat contact
Evaluation background
The programme covers training tops, shorts and rash guards, used for grappling and repeated mat contact. The environment is high friction and frequent industrial laundering and the requirement written into the brief was tear strength with antibacterial protection. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Compression Warp Knit |
| Composition | 72% nylon / 28% spandex |
| Weight | 240 GSM |
| Width | 160 cm |
| Primary function | delivers graduated support that stays measurable over time |
| Target | recovery above 92% after repeated extension |
| Test method | ASTM D2594 |
| Additional note | power held in the 18-25 N band |
| Certification | OEKO-TEX Standard 100 |
Compression Warp 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 recovery above 92% after repeated extension 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 Kestrel Sport 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 Kestrel Sport, 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 ASTM D2594 remains a valid claim for that period.
Test records and inspection notes for the Martial Arts and Grappling Range
Scorecard
| Criterion | Result |
|---|---|
| Function after 30 washes | 4.8 / 5 |
| Appearance retention | 4.6 / 5 |
| Pilling grade | 4.5 / 5 |
| Hand retention | 4.7 / 5 |
| Shade | 4.4 / 5 |
“Fifty washes later the fabric still performs. That is what convinced our buying team.” — Kestrel Sport Technical Team
Packed bulk rolls before shipment to Sweden
Verdict and recommendation
Fifty cycles is a reasonable service life for this product class, and the compression warp knit stayed inside tolerance throughout. Care wording should be printed exactly as tested. For Kestrel Sport the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue ASTM D2594 results with every lot so any claim can be supported with data.
