A production-ready Double Knit for Swimwear, specified around chlorine and sunscreen resistance with shape retention. Composition is 88% polyester filament / 12% spandex, which delivers the workhorse blend for training ranges that wash repeatedly. Every lot is finished and tested so that Four-Way Stretch Recovery is measurable rather than claimed.

88% Polyester 12% Spandex 320 GSM Double Knit, face view
Key specifications
| Parameter | Value |
|---|---|
| Fabric name | 88% Polyester 12% Spandex Four-Way Stretch Recovery Double Knit |
| Composition | 88% polyester filament / 12% spandex |
| Construction | Double Knit (a stable double-knit construction) |
| Weight | 320 GSM |
| Width | 155 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
Because a stable double-knit construction is used, the fabric behaves consistently across the roll: body and firmness without any need for lining. That consistency is what lets a factory cut confidently and lets a brand repeat an order a season later with the same result.

Double 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: the workhorse blend for training ranges that wash repeatedly.
- Construction benefit: body and firmness without any need for lining.
- 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
Used for Swimwear and for the accessories around them. chlorine and sunscreen resistance with shape retention is the reason it is chosen, and the fabric bonds, prints and sews on standard machinery without special settings.

Four-Way Stretch Recovery fabric prepared for Swimwear production
Dyeing, finishing and customisation
The fabric can be supplied greige, piece dyed or printed. Add-on finishes are selected after a wash durability trial, because a finish that disappears after five washes is worse than no claim at all.
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
Minimum trial order is 300 metres per colour and bulk production takes 20-25 days once the approval sample is signed. Documentation includes test reports per lot, OEKO-TEX conformity and full construction sheets.

Roll inspection and packing before shipment
Frequently asked questions
What is the minimum for a first order? Development starts at 300 metres per colour, which is enough for a proper wear trial and a small capsule. Bulk pricing improves at 1,000 metres and above per colour.
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.