I've noticed lately that the pillow I am using tends to make my head sweat. Ultimately, there is an odor and I need to wash it. I need suggestions for a pillow that will keep my head cooler. I've thought about the memory foam pillows but would have to cut it down to size I'm sure. The one I made, very cheap, is about 12 x 20. I plan to modify the existing pillow with a down side and use it exclusively for hiking/camping, but as I sleep full time in the hammock at home, I need an every day solution.