Developed for Swimwear, this Ponte Roma Knit answers the most common brief we receive: chlorine and sunscreen resistance with shape retention. The yarn package is nylon spandex with silver ion filament, chosen because it provides antibacterial performance that survives repeated home laundering, and the finished cloth is set and tested so that Four-Way Stretch Recovery.

Nylon Spandex Silver Ion Yarn 300 GSM Ponte Roma Knit, face view
Key specifications
| Parameter | Value |
|---|---|
| Fabric name | Nylon Spandex Silver Ion Yarn Four-Way Stretch Recovery Ponte Roma Knit |
| Composition | nylon spandex with silver ion filament |
| Construction | Ponte Roma Knit (a firm ponte roma double knit) |
| Weight | 300 GSM |
| Width | 150 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. nylon spandex with silver ion filament supplies the base behaviour, a firm ponte roma double knit sets how air and moisture move, and finishing is kept deliberately light so the attributes survive washing.

Ponte Roma 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: antibacterial performance that survives repeated home laundering.
- Construction benefit: a clean, structured surface with enough hold for tailored athleisure.
- 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 Swimwear, and suited to any programme where chlorine and sunscreen resistance with shape retention 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 Swimwear 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
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 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.