yarn count: 20S, 32S, 40S specs: 100%porel, 80porel/20viscose,80porel/20combed cotton,65porel/35combed cotton, ... provides unusual comfortable effect, and excellent thermal system makes the fabric light and has thermal-insulation performance. Porel fiber is suitable ... of hollowness will be destroyed. Porel fiber can be used for underwear, thermal underwear, T-shirts, sweaters, pajamas, sportswear, and ...