1) The polyester spun yarn is made of recycled 2) grey series 1 specification of ... ,40sColored yarn 21s,32s,40s228/299 21s,32s,40s5-7# 21s,32s,40sGeneral black 21s,32s,40s 2 material:ployester3 usage:for knitting ... orders,we can give you a special discount. 100% polyester yarn for SOCKS