... spandex air covered yarn factory, this yarn vailable for socks, underwear, knitting fabric, denim and sweaters. Features:(1)spandex coverd yarn(2 ... ;A40200,T40200;A40210,T40210;A40300,T40300; A70200,T70200.4.products for seamless &small-circular knitting machineA2030,T2030;A2040,T2040;A2070,T2070 ... spandex 250d polyester+40d spandex150d polyester+40dspandex air covered yarn (for denim fabric)