The lightest, most breathable waterproof sock in the DexShell range, the Ultra Thin Crew is built for athletes and adventurers who want full protection without the bulk. Using a high-performance Porelle® membrane, these socks are completely waterproof and windproof while remaining highly breathable, making them ideal for warmer weather or high-output activities. The sleek, low-profile design fits snugly inside lightweight shoes, while the moisture-wicking inner layer keeps your feet dry and comfortable mile after mile. Perfect for cycling, running, or everyday wear when the weather is unpredictable. Size Small Medium Large X-Large EU 36-38 39-42 43-46 47-49 UK 3.5 6-8 9-11 12-14 Features Lightest version with soft touch. Fit into any cycling shoes. Outer: 32% Modal (rayon)37% Polyamide28% Cotton3 % Elastane Interlining: Porelle® membrane (PFOA free polyurethane) Inner: 60% Bamboo rayon40% Polyamide Specification Age Group: Adult Waterproof Windproof Breathable Sock Height: Crew