Blubandoo Cooling Safari Hatbandoo - Keeps Your Body Chilled for Hours LG/XL Linen/cotton Submerge this hat in cold tap water for 5 minutes, and it will keep you cool for hours! Fabric contains magic cooling crystals that transform into a frosty gel for hours of comfortable heat protection. Wide brim keeps sun out of your eyes, and adjustable chin strap keeps hat on your noggin. Great for gardening, theme parks, camping and more! Linen/cotton blend. Imported.