Vermont-based Darn Tough makes hard-wearing, all-weather performance socks (breathable, itch-free merino wool naturally regulates temperature to keep you warm in the winter and cool in the summer) in a fine-gauge knit for a close fit. Naturally antimicrobial fibers wick away moisture and repel odor—an obvious bonus—and dense terry loops on the bottom add cushioning and warmth without bulk. On top of that, Darn Tough offers an unconditional lifetime guarantee (just try to destroy them). What can we say? Winter-tested Vermonters know their socks.