Very sturdy men's swim brief in traditional cut from Tyr. Used for some open water swimming in the ocean - In very good shape This brief feels like it could take a pounding in the surf, but it's still very comfortable and easy to wear. Side seam length: 4" Details from the manufacturer: Durafast Elite fabric: TYR's most advanced fabric. For performance and training. The strength and colorfastness of Polyester combined with the comfort of Spandex. Racer brief is able to sustain over 300 hours of use. 100% Chlorine proof. 100% Colorfastness for color staying power. Circular knit construction for durability. Flexible and comfortable. Lined in black. Details Fabric: 94% Polyester, 6% Spandex. Care: Hand wash, cold. Line dry. Closure: Pull on Chlorine Resistant: Yes