Klim Solstice 3.0 Socks Klim Solstice 3.0 Socks are designed for peak performance in cold conditions. Features: Teton Merino wool blended with acrylic, polyamide nylon, Lycra, SoftAir and polyester for durability and comfort 36 Merino Wool / 31 acrylic / 12 nylon / 17 elastane / 4 polyester Over-the-calf height European sourced yarns Reinforced toe, heel, sole Full terry loop construction for cushioning and warmth Arch and ankle support stretch bands Patterned front mid ankle bend for reduced bulk Tubular cuff for better fit and stretch recovery Over-the-calf height