Shell: 90% Nylon, 10% Elastane; Liner: 87% Polyester, 13% ElastaneDrawstring closureQUALITY MATERIAL: Stretchy upgraded fabric (Shell:90% Nylon 10% elastane; Liner:87% polyester 13% elastane), offer a lightweight, breathable and soft touch which more comfortable and move-freely.CHAFE FREE PROTECTION: 2 in 1 designed with quick dry,lightweight outer layer and breathable lining. compression short support the private protection, reduce the risk of bruising and protect your legs during activities.ELASTIC WAISTBAND: Gym shorts with elastic waistband constructed, internal draw strings for a personalized fit, easy to adjust and firm support.VERSATILE SUITABLE FOR: Men's workout running shorts geared for indoor and outdoor wear, running, training, athletic, fitness, hiking and other training activities.