Fit & Design Built of tough NetPlus(R) 100% postconsumer recycled nylon faille made from recycled fishing nets to help reduce ocean plastic pollution Semi-rigid brim floats and has a dark underbill to reduce glare and protect eyes Vented crown has an internal mesh lining for breathability, comfort and a cooling airflow Adjustable chin strap keeps the hat in place, even in windy conditions Toggled adjustable strap at back of hat cinches tight for a secure fit during high-output activities or rowdy weather Technology Lightweight, minimal headband made with miDori(TM) bioSoft for added wicking and softness, and HeiQ(R) Pure odor control for moisture and temperature management Additional Details Weight: 99 g (3.5 oz) Lining: 3-oz 100% recycled polyester mesh Crown and brim: 4-ply, 4.9-oz NetPlus(R) 100% postconsumer recycled nylon faille made from recycled fishing nets to help reduce ocean plastic pollution; with a PFC-free DWR finish (durable water repellent coating that does not contain perfluorinated chemicals) Headband: 2.3-oz 100% recycled polyester double knit with miDori(TM) bioSoft for added wicking and softness, and HeiQ(R) Pure odor control