While originally designed for fit and comfort, the Thorlo western boot sock's clinically-tested padding used in the heel and in the ball of the forefoot has been clinically shown to reduce foot pain and pressures. The padding is knitted with proprietary THORLON yarn that has superior moisture- wicking properties (moisture/perspiration is a catalyst for blisters). The padding also has been clinically shown to reduce blisters. Thorlos CTPS are also designed to stay up all day long and not wrinkle at the ankle. Being boot lovers ourselves, we know there is nothing more aggravating than having to constantly pull up your socks. This is never an issue because our western socks are made with spandex in the top portion. Try Thorlos boot sockls for 30 days. If you don’t agree that with Thorlos, your feet feel better than when wearing regular socks, Thorlo will refund your money. See packing for details.