ONEFIT Men's Sexy Crotchless Underwear Low Raise Front Hole Bikini Underpants 96%Cotton, 4%Spandex. Hand wash/machine wash. For your health, please wash separately from other laundry Please do not refer to Size Chart, select the size you usually wear, if it is between two sizes, choose the biger size Comfort flex waist and moves with you and keeps its shape wash after wash Each one is carefully through our quality control package, please rest assured to wear These briefs are designed with superior features like reinforced leg bands that keep the underwear in place and plush-backed waistbands that are soft against the skin