The size list is US size ; ---- Material--Ice Silk ; Material--Nylon. Non-trace,Ice silk and Constant temperature underwear.
US S--Waist 26"-30" = Asia size M
US M--Waist 29"-33" = Asia size L
US L--Waist 32"-36" = Asia size XL
US XL--Waist 34"-40" = Asia size XXL
Winday Men's Briefs Ice Silk Triangle Bikinis Underwear print Breathable Briefs