Size: 25,26,27cm Weight: 58g/pair Minimum 1.80% Cotton/Acrylic 40/60 20% Nylon and Elastic yarn 2.Good airing, moisture picking-up 3.Softness, luster, smoothness and bulking 4.Good color fastness: Color fastness to washing: 4 (minimum) Color fastness to light:4 (minimum) Color fastness to perpiration:4 (minimum) 5.Shrinkage after 5 cycles washing: 4% maximum 6.Construction: Welt: 1X1 true rib Leg: 3X2 true rib Foot: Plain