polyester fiberImportDrawstring closed1. [Quick drying] The design is almost knee-length, providing additional sunscreen effect. After swimming training, the drying speed of the quick drying fabric is faster2. [Ergonomics] Engineering V-shaped cutting panel with mesh lining provides overall support and increases comfort and safety; Flat lock seams reduce irritation and let you enjoy swimming training3. [Spandex blended fabric] four-way stretch fabric allows you to swim without restriction; Flat elastic waist with interior drawcord for safety and comfort4. [Chlorine resistance] The chlorine resistance is excellent, the fabric is not discolored, durable, and can fit like new clothes after many times of use5. This sports-training men's swimsuit is designed for training and fitness. It is suitable for swimming team training, swimming competition, daily exercise or various water activities on the beach