SKINS Mens DNAmic Men's Compression Shorts 75% Nylon/25% Elastane Imported Powerful proprietary SKINS fabric fights muscle vibration/oscillation to maximize muscle efficiency and reduce post activity soreness Increased oxygen delivery to active muscles to create more power with less fatigue Engineered waistband for a comfortable, precise fit - exceptional moisture management keeps you dry and comfortable; 50+ UV protection A premium, Technical 1/2 tight/short that is perfect for training and competition SKINS performance compression: it's equipment, not clothing