Merrell Opti-Wick fabric transfers moisture away from your skin and dries quickly to keep you comfortable. 100% polyester. 50+ UPF fabric. Moisture-wicking and quick-drying. Heavy-duty fabric with a lightweight drape. Two side cargo pockets with Vislon metallic-finish zips. Back patch pockets. Coin pocket. Metallic-finish Vislon zipper fly. Fixed waist with grosgrain trim detail. Merrell branded belt loops and swing label.