A full-brimmed, sun protective nylon hat, the Boys' Trim Brim has a nonchafing, removable chin strap. 3-ply, 4-oz 100% Supplex® nylon, with a DWR (durable water repellent) finish and 50+ UPF sun protection Haystacks and chutes. Shorebreak and reef passes. When they come out the other side, we make sure they still have their hats. Lightweight and sun shielding (offering 40-UPF sun protection), this water-minded boys' sun hat has a breakaway, nonchafing chin strap with a soft-lock adjustment that holds tight in the, and the reinforced brim retains its shape, even when wet. Made of fast-drying 100% Supplex® nylon with a DWR (durable water repellent) finish.