Meridian Form Denmark: Yoga and Pilates Studio Programme Wash Durability Evaluation
Meridian Form is a Denmark-based brand whose yoga and pilates studio programme is one of its most demanding programmes. Durability is where most functional claims fail. We washed the recycled nylon interlock fifty times under domestic conditions and re-measured after every ten cycles for Meridian Form.

Meridian Form: Recycled Nylon Interlock in use during mat-based studio sessions and long holds
Evaluation background
The programme covers leggings, crop tops and studio shorts, used for mat-based studio sessions and long holds. The environment is warm, humid studios with sustained low-load stretch and the requirement written into the brief was a soft hand with full coverage through every pose. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Recycled Nylon Interlock |
| Composition | 78% GRS recycled nylon / 22% spandex |
| Weight | 250 GSM |
| Width | 165 cm |
| Primary function | stays fully opaque under tension while carrying a recycled claim |
| Target | opacity above 96% at 30% extension |
| Test method | AATCC 183 |
| Additional note | GRS chain of custody documents |
| Certification | OEKO-TEX Standard 100 |

Recycled Nylon Interlock 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 opacity above 96% at 30% 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 Meridian Form 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 Meridian Form, 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 AATCC 183 remains a valid claim for that period.

Test records and inspection notes for the Yoga and Pilates Studio Programme
Scorecard
| Criterion | Result |
|---|---|
| Function after 30 washes | 4.7 / 5 |
| Appearance retention | 4.4 / 5 |
| Pilling grade | 4.8 / 5 |
| Hand retention | 4.6 / 5 |
| Shade | 4.5 / 5 |
“The report gave us numbers we could put in front of our retail partners without any argument.” — Meridian Form Technical Team

Packed bulk rolls before shipment to Denmark
Verdict and recommendation
Fifty cycles is a reasonable service life for this product class, and the recycled nylon interlock stayed inside tolerance throughout. Care wording should be printed exactly as tested. For Meridian Form 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.