Core-Spun Cotton-Feel Polyester Thermal Brushed Spacer Knit is a spacer knit with two faces developed for Swimwear where chlorine and sunscreen resistance with shape retention decides whether a style succeeds. The base is core-spun polyester with a cotton-like sheath, which gives natural surface comfort with the drying speed of a synthetic. The result is a fabric that delivers Thermal Brushed in daily use rather than only in a laboratory.

Core-Spun Cotton-Feel Polyester 340 GSM Spacer Knit, face view
Key specifications
| Parameter | Value |
|---|---|
| Fabric name | Core-Spun Cotton-Feel Polyester Thermal Brushed Spacer Knit |
| Composition | core-spun polyester with a cotton-like sheath |
| Construction | Spacer Knit (a spacer knit with two faces) |
| Weight | 340 GSM |
| Width | 170 cm |
| Function | Thermal Brushed — traps warm air while staying light enough for active use |
| Performance target | thermal resistance above 0.08 m2K/W |
| Test method | ISO 11092 thermal resistance |
| Additional value | warmth-to-weight ratio better than a standard fleece |
| 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 spacer knit with two faces means cushioning and airflow built into a single piece of fabric, and that structure is what allows the fabric to traps warm air while staying light enough for active use under the conditions Swimwear actually face.

Spacer Knit construction shown at close range
Performance features
- Thermal Brushed: traps warm air while staying light enough for active use, measured by ISO 11092 thermal resistance.
- Hand and comfort: natural surface comfort with the drying speed of a synthetic.
- Construction benefit: cushioning and airflow built into a single piece of fabric.
- 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 Swimwear, where chlorine and sunscreen resistance with shape retention 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.

Thermal Brushed fabric prepared for Swimwear 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
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.
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.