82% nylon, 18% spandexDrawstring closed1. Durable, solid outer fabric with thin waterproof lining to reduce water resistance and adopt solid joint structure2. Comfort+compression, the smooth outer fabric creates the best comfort through muscle compression, and the four-way stretch can move freely in swimming, easy to wear and take off.3. It has excellent chlorine resistance, the fabric does not discolor, and is durable. It can fit like new clothes after many times of use4. 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 Dark blue waterproof swimming pants Men's swimming suit equipped with quick-drying hot spring pants