No matter what your activity, Coooler Neck Rings are a fun, bright fashion accessory that keeps you cool all day. Cooolers are made of 100% cotton and are reusable time after time. Hand wash with mild detergent, rinse thoroughly and rehydrate before wearing. Cooolers provide cool, refreshing relief all day, through the natural process of evaporation. To activate, soak your Coooler in water for 20-40 minutes until crystals transform into a cool, refreshing gel.