95% polyester, 5% spandex imported Elastic closure 1. Quick-drying fabric --- Men's swimming trunks are made of 90% nylon, 10% spandex. Lightweight, quick-drying fabric keeps the body relaxed and cool. Men's swim board shorts have a soft triangular mesh lining for personal protection. 2. COMFORTABLE DESIGN---The men's beach shorts are elastically designed to fit your waist perfectly and prevent the shorts from slipping off, allowing you to do any swimming. Side cutouts for the leg vents ensure maximum freedom of movement in the water. 3. Convenient Pockets--- Men's swimming trunks with safe and practical 2 deep pockets on both sides to carry keys, money, mobile phone, MP3 player or other small things to avoid falling during water sports. This square-leg swimsuit will help you show off your body shape and create a stylish look. 4. Suitable Occasion---Quick-drying beach shorts have a larger range of motion than surf shorts, which makes them ideal for beach activities and sports such as swimming, volleyball, diving, surfing, beach, sunbathing or exercising. 5. Warm Reminder --- Boxer briefs are easy to clean, machine washable and hand washable. Please double check your size with our size chart before purchasing.