Polyester,Nylon,Elastane Zipper closure QUALITY 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. FUNCTION POCKETS: Phone pocket design to prevent phone out slipping, keep free movement. back zipper pocket securely stash valuable items like a key and credit card, keep your hands free during activities. 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.