Woven from lightweight Merino Wool, Darn Tough’s Relay Micro Crew Ultra-Lightweight Women’s Sock packs quite the moisture-wicking and quick-drying performance punch. Reinforced panels in the heel and toe give this running-specific sock a durable profile that works effortlessly with every shoe, every stride, and every mile. It’s designed to go the distance, and it does so with an ultra-lightweight, zero-itch finish that mirrors the comfort of a second skin. It has no cushion in its design, so the Relay Micro Crew is about as lightweight as it gets, but it continues to uphold Darn Tough’s Performance Fit for a secure feel that never slips, bunches, or blisters—even at the highest speeds.