Arctic Cooling Bandana Neck Coolers Neck Cooling Scarf - Black 100% cotton Made in USA Made in USA and 100% cotton / Free Shipping Polymer cooling, easy to use, just soak in water and watch it expand and cool down! Great as a neck cooler or cooling headband. Perfect for work, golf, tennis, hiking, gardening, and any hot activity. Reusable 100's of times and safe. They are 38 inches long and has an adjusting bead so you don't have to tie a knot around you neck, much safer without a knot !