I didn't collect degradation data of the wool hat, only of the items I wore at the time (all furs + cotton underwear, heavy wool sweater, scarf, wool socks and toque). But I doubt very much that the wool hat will degrade so much slower to offset its lower temperature bonus. If you are trying to save cloth, the cap is, unfortunately, the first piece of clothing that should go. During the test I wore all clothes at all times (including sleep) and recorded the following degradation rates per 1