Under Armour men’s Tidal Boardshorts are designed to be quick-drying, and are made of strong and smooth polyester. Featuring UA Storm technology, these boardshorts repel water without sacrificing breathability. Salt and chlorine-resistant materials help prevent fading and wear in the water and anti-odor technology prevents the growth of odor causing microbes. Being rated with UPF 30+ rating, these boardshorts also protect your skin from the sun's harmful rays. Material: Polyester.