ICED Cap- Cooling Hat For Ice Polyester Mesh Drawstring pocket and velcro rear strap closure Easy-to-use drawstring pocket contains ice or works as storage for gels/snacks/trash Designed to allow ice to melt and cool your head, neck, and body. Depending on the amount of ice used and the environment's temperature, ice typically lasts 20-30 minutes. Reduces heart rate in warm or hot weather for comfort and increased athletic performance Perfect for runners of all levels or for other activities like gardening, tennis, camping, lounging by swimming pools, going to the beach, and fishing Fits most adults; adjustable rear strap. We recommend adjusting the size AFTER putting ice in the ICED Cap. Each model's trim color is the color of the bill's underside.