Fit & Design: Close-to-head fit Curved brim Stretchy hybrid construction focuses on weight-saving minimalism and performance Adjustable drawcord at the back Packable and weighs close to nothing, so you can store it in a hip pack or running vest Reflective Outdoor Research logo shines in low lighting for visibility Superior breathability to keep you cool and comfortable Technology: UPF 30 protects skin from the sun's harmful rays Quick-drying for comfort Sustainability: bluesign(R) approved materials make this an eco-friendly addition to your wardrobe Additional Details: Infinite Guarantee(R) means that Outdoor Research gear is guaranteed to perform throughout the lifetime of the product