Check these out: http://www.amazon.com/ProActive-Frogg-Togg-Chilly-Blue/dp/B003YF7W22
They stay wet and cool for pretty much forever, very refreshing to rest on your neck/head...
http://www.amazon.com/Frogg-Toggs-Chilly-Evaporative-Cooling/dp/B003YF7W22/ref=sr_1_2?ie=UTF8&qid=1452153765&sr=8-2&keywords=frogg+toggs These are so amazing when its super hot outside. I had one when everyone had to wait in that awful line through the front gates on the first day. Total lifesaver considering my friend and I were waiting for ,i kid you not, four hours to get in.