Fabric: These swim trunks are made of 86% polyester and 14% spandex Sizing: These swim trunks come in all sizes, please see the size chart. Lightweight and comfortable: good elasticity, comfortable to wear when swimming without feeling of oppression. Quick-Drying Design: These swimming trunks dry quickly after getting out of the water to avoid embarrassment Versatile: Suitable for both sea and pool swimming, these swim trunks are designed for recreational swimmers seeking comfortable training