The PhD Ski Ultra Light Sock is ideal for those like a barely there sock with a technical fit. Idestrucatwool and Shred Shield Technologies create a durable sock that fights the signs of wear and tear. The Ultra Light Sock features body-mapped mesh zones for added breathability making it a performance oriented sock. Over-the-Calf, 14in Overall Height, Ultra Light Cushioning, 55% Merino Wool, 41% Nylon, 4% Elastane, 4 Degree Elite Fit System - Dialed, Performance Oriented Fit, Indestructawool Technology - Enhanced Durability, Shred Shield Technology - Reduces Wear From Toes, Wider Welt - Secure Fit and Comfort, Body-Mapped Mesh Zones for Added Breathability, Warranty: Two Year, Material: Wool/Synthetic Blend, Type: Ski, Weight: Ultra Light, Model Year: 2021, Product ID: 619474, Model Number: SW001192E47-M, GTIN: 0193394681211