Related Clues:
- Lightweight synthetic
- Knee sock material
- Certain synthetic fiber
- Knitwear material
- Acrylic from DuPont
- Fabric introduced by DuPont
- Durable fiber
- Acrylic fiber trademark
- Sail material, often
- Sweater fiber
- DuPont discontinued it in 1990
- Sock synthetic
- DuPont's Fiber A, now
- DuPont's acrylic fiber
- 1950s sweater material