What Makes Thermolite® an Industrial Standard
Invista™ Thermolite® hollow-core polyester insulation fiber — delivers warmth without weight. Used in cold-store workwear, cryogenic protection suits and multi-layer medical garments.
Technical Performance Data
| Property | Test Method | Result |
|---|---|---|
| Insulation Value (light) | EN ISO 11092 | 0.12–0.18 m²·K/W |
| Insulation Value (regular) | EN ISO 11092 | 0.20–0.28 m²·K/W |
| Wet Insulation Retention | In-house test | ≥85% of dry value |
| Moisture Wicking | AATCC 195 | Good — vertical wicking >60mm |
| Compressibility | — | Returns to full loft after compression |
| Weight Range | — | 40 / 80 / 120 g/m² |
Why We Use Thermolite® in Our Products
Hollow-core structure traps air efficiently — Thermolite® delivers equivalent warmth at 25% less weight than traditional polyester fill, reducing garment bulk for workers needing full mobility.
Unlike natural down (which collapses when wet), Thermolite® retains 85%+ of insulation value when damp — essential for cold-store workers moving between temperature zones throughout the shift.
Machine washable and quick-drying — Thermolite® garments can be laundered at standard industrial wash temperatures without losing insulation performance, reducing total cost of ownership.
Thermolite® Downloads
PDF documents are available on request. Contact us to receive technical specifications and test reports.