Built for warm-weather field work, wet trail conditions, and full-coverage boot protection. Engineered specifically for women who need complete calf defense inside tall rubber or leather boots without adding unwanted weight, these Lightweight Knee-High Merino Wool Boot Socks combine natural moisture control with a custom-contoured fit. Crafted with a premium 65% Merino wool blend, they feature an enhanced Y-heel pocket that locks around your heel to prevent slipping, while actively wicking sweat to keep legs and feet dry from dawn to dusk. 65% Merino Wool, 30% Nylon, 5% Spandex Arch support Full cushion foot Moisture Wicking Reinforced heel and toe areas Seamless toe comfort