Please note that the number in the style name indicates denier or density of the nylon. These ultra-comfortable Wolford knee-highs are sure to become your go-to favorite socks. Made of a super-soft cotton velvet blend. Ribbing to prevent slippage. 55 percent cotton, 37 percent polyamide, 8 percent elastane. Machine wash gentle, line dry. Imported. If youre not fully satisfied with your purchase, you are welcome to return any unworn and unwashed items with tags intact and original packaging included.