71% Polyester, 29% SpandexCOMFORTABLE AND SOFT MATERIAL: The inner lining of mens swimming trunks is made of 71%Polyester and 29%Spandex, very good breathability can keep your sports comfortable, the compression lining of the boxer swimming trunks can protect your skin, and can also prevent the outer pants from sticking to the skin.DIFFERENT STYLES OF COLORS: Multi-color optional, we provide you with a variety of colors mens bathing suit to match your sports, cute cartoon and fruit patterns, can bring a different feeling to your sports, let you enjoy your sports time.FITTED LINING DESIGN: Mens swim trunks comfortable and soft inner lining design, mens swim trunks with compression liner there are three outer pockets and a lined compression , the outer velcro pocket can store easy-to-fall items, the drawstring design can automatically adjust the elasticity of the waistband, it will not slip, you can Enjoy your leisure time with confidence.WEAR ON MULTIPLE OCCASIONS: Men& 39;s lined swimming trunks can be suitable for various outdoor and indoor sports, beach, surfing, swimming and also suitable for aerobic exercise such as gyms, lined shorts also have good sweat-absorbing function, mens swim trunks which is a great choice for sports and fitness."