Polyester Elastane Chitosan Finish Four-Way Stretch Recovery Double Knit is a stable double-knit construction developed for Sports Bras where controlled support and soft contact at the underband decides whether a style succeeds. The base is polyester elastane with a bio-based chitosan finish, which gives a bio-derived antibacterial route for restricted substance sensitive programmes. The result is a fabric that delivers Four-Way Stretch Recovery in daily use rather than only in a laboratory.
Polyester Elastane Chitosan Finish 320 GSM Double Knit, face view
Key specifications
| Parameter | Value |
|---|---|
| Fabric name | Polyester Elastane Chitosan Finish Four-Way Stretch Recovery Double Knit |
| Composition | polyester elastane with a bio-based chitosan finish |
| Construction | Double Knit (a stable double-knit construction) |
| Weight | 320 GSM |
| Width | 165 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
The construction does the work before any chemistry is added. a stable double-knit construction means body and firmness without any need for lining, and that structure is what allows the fabric to extends in both directions and returns without bagging under the conditions Sports Bras actually face.
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: a bio-derived antibacterial route for restricted substance sensitive programmes.
- 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
The first choice for Sports Bras, where controlled support and soft contact at the underband is the requirement that decides the fabric. It also converts cleanly into coordinated pieces in the same programme, since the hand and the shade run together.
Four-Way Stretch Recovery fabric prepared for Sports Bras production
Dyeing, finishing and customisation
Available in piece dyed, yarn dyed or sublimation ready form. Functional finishes such as moisture management, antibacterial, anti-pilling and UV absorption can be applied individually or combined, and each is verified against its test method before bulk release.
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
Trial quantity starts at 300 metres per colour with laboratory dips in five working days. Bulk lead time is 20-25 days after approval, and every lot ships with a test report, a shade check and an inspection record.
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 we get recycled content with this construction? In most cases yes. GRS certified recycled nylon or polyester can replace the virgin yarn with full chain of custody documents, usually with no visible change in hand or performance.
