Developed for Running Tops, this Interlock Knit answers the most common brief we receive: low weight with fast moisture transport. The yarn package is 75% nylon 6 filament / 25% spandex, chosen because it provides higher power for compression grades that still run on standard knitting machines, and the finished cloth is set and tested so that Four-Way Stretch Recovery.

75% Nylon 25% Spandex 250 GSM Interlock Knit, face view
Key specifications
| Parameter | Value |
|---|---|
| Fabric name | 75% Nylon 25% Spandex Four-Way Stretch Recovery Interlock Knit |
| Composition | 75% nylon 6 filament / 25% spandex |
| Construction | Interlock Knit (a double-bed interlock knit) |
| Weight | 250 GSM |
| Width | 170 cm |
| Function | Four-Way Stretch Recovery — extends in both directions and returns without bagging |
| Performance target | less than 5% growth after repeated extension |
| Test method | ASTM D2594 stretch and recovery |
| Additional value | recovery tested on a worn garment, not only on flat fabric |
| Stretch | Four-way, recovery above 92% |
| Certification | OEKO-TEX Standard 100, REACH compliant inputs |
| MOQ | 300 m per colour |
| Lead time | 20–25 days after approval |
Why this construction works
Performance comes from three decisions: the yarn, the stitch and the finishing route. 75% nylon 6 filament / 25% spandex supplies the base behaviour, a double-bed interlock knit sets how air and moisture move, and finishing is kept deliberately light so the attributes survive washing.

Interlock Knit construction shown at close range
Performance features
- Four-Way Stretch Recovery: extends in both directions and returns without bagging, measured by ASTM D2594 stretch and recovery.
- Hand and comfort: higher power for compression grades that still run on standard knitting machines.
- Construction benefit: identical faces on both sides, so the fabric stays opaque under tension.
- Consistency: GSM and width tolerance are locked per lot and recorded on the inspection sheet.
- Durability: performance is verified after repeated washing, not only as delivered.
Recommended applications
Specified mainly for Running Tops, and suited to any programme where low weight with fast moisture transport is written into the brief. Designers use the same base for matching styles, which keeps colour continuity simple across a collection.

Four-Way Stretch Recovery fabric prepared for Running Tops production
Dyeing, finishing and customisation
Dyeing runs on a controlled recipe with consolidated dye lots to hold shade continuity. Finishing options include wicking, antibacterial, soft touch and anti-pilling, applied after lab trials so the hand approved in sampling is the hand delivered in bulk.
Care instructions
- Machine wash at 30 degrees with mild detergent, no fabric softener.
- Dry away from direct heat and do not tumble dry hot.
- Cool iron on the reverse if needed, and avoid bleach.
Ordering, sampling and quality control
Sampling is fast: A4 hand feel cards, laboratory dips and a 5 metre trial roll within a week. Bulk runs in 20-25 days, with inline inspection and a final random inspection before packing.

Roll inspection and packing before shipment
Frequently asked questions
Is the performance tested on every lot? Yes. The named test method is repeated on bulk fabric, not only on the approval sample, and the report carries the lot number so results can be traced back.
Can the weight and width be changed? Yes. Most programmes run between 140 and 340 GSM, and width can be set between 150 and 180 cm to match your marker. Changing weight changes cover and stretch, so we re-test before confirming.