Hi Jeri, I bought an Enduracool towel at Lowes a few weeks ago and I LOVE it! I don't know who invented those things but it's the best $15 I ever spent. It stays cool for a long time and I don't get overheated as quickly as usual. They apparently make scarves/headwear too. And, it's machine washable! I've never put it in the dryer cause I don't know if that would make it ineffective with whatever the cooling technology is so I just take it out of the washer and hang it to dry, it dries very quickly. I highly recommend them!
Edited to add: When I was in Lowes a few days ago someone was looking for them and I heard the clerk tell him that they were sold out but hoped to get more back in stock in soon. She said they have been extremely popular with athletes, construction workers and landscaper's.