Columbia Sportswear Big & Tall Men's Backcast III Water Short 100% textured nylon poplin Imported 100% textured nylon poplin Omni-Shade UPF 30 Sun Protection These easy-fitting mens water shorts come in a durable, quick-drying nylon with our highest level of UV protection and a built-in mesh brief that dries ultra-fast so you can jump in and out of the water without needing to change. Interior mesh brief, Quick dry