Ucsports 6 colour men's ice silk U convex briefs fabric:Ice silk, Main fabric composition nylon Waist-type: low-waist Design Features: U convex design Comfortable breathable Asia size M:= US S--Waist 25.6"-27.5" Asia size L: = US M--Waist 27.5"-29.5" Asia size XL: = US L--Waist 29"-32.5" Asia size XXL: = US XL--Waist32''-34.5''