The superior Icebreaker Ski+ Mid Over the Calf ski sock is designed to give all-day comfort to skiers and snowboarders too. With Merino wool the sock is super warm and high wicking. Medium padding sock, which is equivalent to a Falke SK2 ski sock. This is a black colour option. Fabric: 77% Merino Wool, 21% Nylon, 2% Lycra Best for: Snow Sports Benefits: A touch of LYCRA® for the perfect fit; Lightweight, naturally odor-resistant, breathable Features: Anatomic toe box; Strategic light cushioning, anti-blister toe seam Height: Over the Calf - 16.5 Cushioning: Medium Style: IBN720 Care Instructions Machine wash. Tumble dry on low, inside out. Exact instructions on the care label.