DESMIIT Men's Thermal Underwear 95%Modal+5%Spandex 95%Modal+5%Spandex Elastic waist,soft and comfortable Warm Waffle Knit traps and retains body heat The size for all item products are asian size. Please pay a attention before you make order. If you shopping the item from U.S.A or EU brands,should be choice one size up. Modal Rich for Comfort. Shrinkage Controlled