Wigwam's Gobi Liner Socks are the best insurance you can have for your feet. Other than being extra layers of protection, these extremely lightweight liners move moisture faster to keep your feet dry and ultra-comfortable. Gobi Liners shield the foot against outside air to retain body heat and stay put naturally. Constructed of highly absorbent and stain-resistant 100% polypropylene fabric (exclusive of spandex). Made in the USA.