The Upswell hat has an unstructured, mid-crown, relaxed fit, constructed with a water resistant nylon that will provide days of comfort. Laser-cut perforations on the back panels enhance air-flow to keep your head cool and allows air in and out for a comfortable and dry fit.The traditional snapback and woven rope will keep you looking good on or off the water. Mid Crown Adjustable Back 5-Panel Construction Quick Dry Ultralight Fabric 4-Way Stretch Water and; Stain Repellent Laser Cut Venting Moisture Wicking Headband Material: 100% Nylon