This hat goes on when the sun rises above the horizon, and stays on when raindrops start falling. Its made from an ultra-durable 4-ply, 4.2-oz Supplex® nylon fabric with a DWR (durable water repellent) finish, and reverses to either a contrasting solid color or print. A soft tuck-away chin strap with a hook-and-loop fastener holds securely without chafing young jawlines. Packs small; easy care.