WINDAY Men's Sexy Underwear Thong G-String Elastic Smooth Bikini Airplane Underwear Package Contents:1*Briefs Material--Cotton ; Material--Spandex Clearing mite antibacterial effect, good affinity to skin, breathable moisture, not out of shape Asia size M:= US S--Waist 27.5"-29.5" ; Asia size L: = US M--Waist 29"-31.5" ; Asia size XL: = US L--Waist 30.5"-33" ; Asia size XXL: = US XL--Waist 32"-34.5" ;