iKingsky Men's Sport Thong Sexy Low Rise T-Back Men Underwear 85% Polyamide 15% Spandex Waist: US S=China M:28"-30"; US M=China L:31"-33": US Large =China XL:34"-36" You select size is US Size,but we send product tag size is China Size.The China Size is bigger one size than you order.Because of the China size is about 1 size smaller than US size.And our company product tag is printed in China size only.For example,you order size "M", we will send you the item with China label size "L" Breathable fabric draws moisture from the body, while the sports engineered waistband gives total stretch and recovery These sexy men's underwear are designed as a low rise style, which falls below the natural waistline, and stays hidden underneath pants and jeans If you want a hot style combined with fantastic comfort, this is the underwear for you