100% Polyester Pull On closure 100% Polyester - Brushed Microfiber Fabric, Lightweight with long-lasting durability and fade resistance. Quick-drying Tech & Moisture Management delivers incredible all-day comfort and coziness. Non-see Through when it wets Draw Cord & Elastic Waistband - High Elastic Waistband with drawstring inside all around the waist, free to adjust the waist size, never worry about sagging or slipping down. Choose One Size Up if you prefer more looser fitting Mesh Brief Liner - Mesh lining briefs inside offers extra support, dries quickly to keep you cool and dry with excellent ventilation, breathability, ultimate softness and ease Convenient Pocket Designs - 2 Side ts & 1 Back ZIP pocket, for keys, wallet, sunglass, and any other small items Occasions - Perfect for Swimming, Surfing, Drifting, Walking, Running, Gym, Sports, Exercise, Beach Vocation, Pool, Travel, Lounging Home Wear, Leisure Shorts, etc.