ONEFIT Mens Small Boxer Briefs Sexy Low Waist U Convex Breathable Translucent 80% Nylon 20% Spandex. Hand wash/Machine wash About Size --US:S=CN:M ; US:M=CN:L ; US:L=CN:XL (Pls choose the size that you usually wear, the tag of the item is not, but the size is suitable to you) Nylon fabric is more resilient,This is the premium quality underwear you can buy Comfort flex waist and moves with you and keeps its shape wash after wash Enjoy the comfort and flexibility that our shorts Panties bring; Organic cotton and other sustainable textiles ethically made