Winter Socks. Midweight merino blend performance and over the calf fit. The women's Burton Performance Midweight Socks are packed with little details that make a big difference. We're talking warm, dry feet that stink less. Design: Midweight merino blend sets you up for dry, comfy, stink-free feet Medium density cushioning, elastic support, and smooth toe seams add up to a better experience Chafe-Free Link Toe Seam Odor-Resistant Polypropylene Reinforced Footbed Medium-Density Cushioning Throughout Sock All Over Elastic Support Sock Lock Reinforcements Low Profile Welted Cuff Midweight Additional Details 41% Polyamide, 23% Merino Wool, 23% Recycled Polyester, 10% Polyproylene, 3% Elastane [Snowy Pines]