My husband and I walk every day, rain or shine, which in the summer, where we live, means trying to stay fit in near 100 degree temps. I wear 2 of these just to survive. I soak them very good so that they are actually dripping on my shirt when I put them on, one on my neck and one on my head under my hat. I tuck the ends into my shirt to keep them wet longer, because, yes, they do tend to start drying out before our 80 minute walk comes to an end, but I'd never make it without these towels. SomeSee full review