Material: 92% polyester, 8% spandex Imported Stretch closure QUICK DRY STRETCH FABRIC: Keep your workout dry and flexible with lightweight and efficient breathability on stretch fabric panels. These swim trunks ensure a snug fit while helping to improve mobility. Elastic waistband with drawstring: The drawstring is freely adjustable to accommodate your waist elasticity. Upgraded compression lining: The swimsuit has a silky compression lining that protects your skin and prevents the outer trunks from sticking to your skin. It features water and sand resistant technology. Suitable for any situation: can be used for all kinds of outdoor and indoor sports, beach, surfing, fitness, training, running, swimming, also suitable for aerobic exercises such as gym. Men's swim trunks are the best choice for sports and fitness.