These shorts are made with lightweight and breathable material. I bought them on Mercari for use both in and out of the water, and I've only used them once. They aren't made of true swimwear fabric, but they are supposed to dry quickly when wet. - Brand: RAT EFFECT - Color: Beige - Material: 94% Polyester, 6% Polyurethane - Size: 160 - Design: Embroidered logo Thank you for looking.