Soak your Blubandoo cooling cap in water for only five minutes to keep cool for hours. Lowers body temperature though evaporative forehead cooling. Dries to the touch within minutes, yet keeps cool for hours, even days, without refrigeration. Reduces risk of heat stroke. Great for sports, work, play and leisure. Contains non toxic, high performance, five minute hydrating crystals within the sweatband area. Lightweight mesh allows the cooling sweatband to breathe and cool. Includes a two channel, flat cooling band design for optimum forehead surface cooling. Features top of the head fabric protection from the sun. Adjustable 4 hook loop connection, one size fits most. Made of the finest grade 100% cotton and 100% polyester mesh. Reusable, again and again, by repeating hydrating steps. Hand washable.