I took about a 2 hour ride today. 90 degrees in the shade and kinda humid. The back of my Tshirt was soaked and my butt too. I remembered I had these things for riding my recumbent trike.
So I stopped at the house and grabbed one. Took an hour ride I could immediately feel my back and butt cooling off at the end of my ride my shirt was dry.
They come in different sizes and thicknesses. About $100 each. I would use it in the winter but it's great for summer.
The first one is about as thick as my finger and the other is a little thicker than my thumb.
