FitnessSun - Mens Quick Dry Tights Undershirt - Compression Base Layer - Body Shaper Sports Muscle Tank Top MATERIAL - Polyester 92%, Lycra 8% FEATURE - Immediate Absorption & Instant Transfer,Quick Drying.3D slim cutting support upper body muscle effectively FUNCTION - Great for Skiing, Snowboarding, Training, Competing, Fitness and all weather sports and activities USE - Suitable for ALL PERSON and ALL PLACES SIZE SELECTION - Size available from M ~ XL - Please compare your size to the size guide in the left picture or description