Color: Navy Size: M Waist 75-81cm Material: 78% Polyester 22% Synthetic Fiber (Elastoolefin) Although it is size M, it may be small for those looking for a men's M size. When I layered it with my son's size 150 swimsuit, which he has worn for several years and has likely stretched, the elastic waistband was about the same width. By the way, I measured the elastic waistband and it was about 29cm x 2. Please keep this in mind.