The Patagonia Brimmer provides 40+ UPF sun protection and instant shade for full days outside. It works just as well for a hike as it does on the river-and it floats if you take an accidental swim. Made in a Fair Trade Certified(TM) factory. Product Features: UPF Protection - Main fabric is built of 100% recycled polyester stretch ripstop that&';s treated with a durable water repellent (DWR) finish made without intentionally added PFAS, and 40+ UPF sun protection and a wide brim help keep the sun off you Mid-Crown Fit - Mid-crown fit with a 3" brim; available in two sizes Buoyant Brim - Foam brim and lightweight construction keep this hat afloat if it ends up in the river Chin Strap - Adjustable drawcord chin strap keeps the hat in place, even in windy conditions Quick-Wicking Internal Sweatband - Lightweight, low-profile sweatband offers moisture and temperature management Supporting the People Who Made This Product - Made in a Fair Trade Certified(TM) factory, which means the people who made this product earned a premium for their labor Product Specifications: Fabric: Main body: 2.7-oz 100% recycled polyester stretch ripstop with a durable water repellent (DWR) finish made without intentionally added PFAS, and 40+ UPF sun protection. Underbrim: 4-ply, 4.9-oz NetPlusA(R) 100% postconsumer recycled nylon faille made from recycled fishing nets to help reduce ocean plastic pollution; with a DWR finish made without intentionally added PFAS. Sweatband: 2.3-oz 100% recycled polyester double knit. Underbrim fabric is certified as bluesignA(R) approved. Made in a Fair Trade Certified(TM) factory. Care Instructions: Machine Wash Cold Gentle Cycle, Do Not Bleach, Line Dry, Do Not Iron Weight: 68 g (2.4 oz)