The Tilley LTM5 sports a medium brim alongside its ¾" polyester mesh crown, providing air circulation and comfort during warmer months. Built with Tilley Nylamtium®, a durable, water and mildew-resistant lightweight nylon, it comes with a lifetime guarantee, UPF 50 protection, a DWR finish, a hidden pocket, buoyancy, a Hydrofil® Tuckaway Wind Cord, and Bluesign® approval.