5.1, 5.2 single, bleach white polycotton yarn, 60% polyester, 40% cotton, popularly used for knitting 600g/dz knit working glove 5.1, 5.2 single, bleach white polycotton yarn, 60% polyester, 40% cotton, popularly used for knitting 600g/dz knit working gloves. polycotton yarn