NO RASH: Our anti-chafe swim trunks feature a unique, supportive liner that prevents the inner thigh rash which ruins most beach/pool days. No tags, a lined waistband and minimal number of stitches against the skin ensure total comfort. FUNCTIONAL: Easily the most versatile men’s swim suit on the market. Take your beach attire straight into your casual evening attire with these lined swim trunks. UPF 50+: Not only do these swim trunks provide extreme comfort, but they also protect from the sun with a 50 UPF rating. Ditch the risk of chemical filled sunblock and adopt our UV protection clothing! THOUGHTFULLY DESIGNED: These durable swim trunks will not break down or fade from chlorine. They feature a functional drawstring as well as one side zipper pocket.