It was a gift from a friend of mine who makes Kool Tie wraps. He also used to make these and had a left-over.

Unlike the others I've seen, These don't require ice inserts. I submerge it in H2O for 2 minutes, hang on a hanger and ring out, then can wear it under clothes for up to 12 hours with only 2% coolness lowering. It's awesome!!

It really changes the way I feel about living in Arizona.

BTW, if you want to check out the Kool Ties, they are awesome, I have several of them. You soak them in H2O for 30 min and they stay cool for days. I wear them on my neck and wrists sometimes.