WINDAY Men Briefs Breathable Ice Silk Triangle Bikinis and Briefs 4 Packs Package Contents:4*Briefs Material--Ice Silk ; Material--Nylon Asia size M:= US S--Waist 25.6"-29.5" ; Asia size L: = US M--Waist 29.5"-33.5" ; Asia size XL: = US L--Waist 31.5"-38.5" ;