The Patagonia Trim Brim Hat is reinforced brim on this girls' sun hat is broad enough to shade her face and neck but not so broad that it will interfere with her duck dive. Made of lightweight and fast drying 100% 3 ply Supplex nylon with a DWR durable water repellent finish and 50 UPF sun protection, it has a removable, non chafing chin strap with a soft lock adjustment that holds tight. Cinch on crown adjusts fit. Wide, reinforced brim protects head, face and neck and retains shape when wet ventilation holes regulate airflow. Hat packs small for travel.