The Tilley LTM5 Hat boasts a medium-width brim, plus a 3/4" mesh-covered crown that adds ventilation for comfortable wear in hot weather. Crafted from Tilley Nylamtium®, a lightweight nylon that's strong, water-resistant, and quick-drying, this hat is designed to last and comes with UPF 50 protection along with a DWR finish. Furthermore, this product features a hidden pocket, a buoyant Hydrofil® tuckaway wind cord, and a Bluesign® approved mesh lining. Plus, you can have confidence in your purchase with its lifetime guarantee.