Sun coverage for small heads. The cape provides neck protection and compresses easily for leaning back in a car or stroller. A buoyant foam core in the brim keeps the hat afloat if it falls out of the canoe. Breakaway chin strap provides security and safety. Light nylon fabric dries quickly. Medium and large sizes have mesh side panels for ventilation. Not found in size small. Shieldtek DWR finish resists water and dirt. Dark coloured fabric under brim blocks glare. Buckle and strap adjust sizing. Adjustable chinstrap uses a gentle slider on the small size, and a toggle on the medium and large sizes. Small fits 0-2 years old (47-51.5cm). Medium fits 2-5 years olds (52-57cm). Large fits 5-9 years olds (55-58cm). Hand washable in cold with mild soap. Line dry. Do not iron. Packs flat or rolls for travel, but it's best not to crease the brim.