Fact: cold feet ruin days, so we’ve taken the heaviest weight merino wool fiber contents we could find and built winter-ready, over-the-calf warmth in the OTC Wader Sock, tested in conditions that would have less-committed anglers inventing excuses. Given their heavyweight, thick nature, gone are the days of doubling up socks in attempts to stay warm—these are the socks built to keep you in the game all day. Because they're patterned after the contour of our wader booties and boots, expect a seamless fit with reinforced zones in problem abrasion areas like the heel, toebox, and the top of your ankle where wading boots end. Ribbed arch eliminates bunching and ensures comfort. Wool/nylon/spandex. Made in USA.