100% Waterproof knee-length sock with dense resilient terry cushioning throughout, ideal for outdoor activities where an increased amount of insulation is desired. Comprising 3 layers the Heavyweight knee-length StormSock features dense resilient terry cushioning throughout the sock for warmth and padding. Primarily knit from Merino Wool, known for its anti-bacterial, anti-odour and moisture management properties, the sock will keep your feet warm, dry and comfortable. The outer layer sock, made from nylon, protects the Hydrotech waterproof breathable membrane against abrasion from the boot. Lycra knit through every course gives the sock Bridgedales performance fit and together with the flat toe seam and elastic arch support ensure the sock remains in place and doesnt cause any hotspots. The stretch PU membrane and clever matrix lamination process that bonds the three layers of Bridgedales Stormsock together ensure they have class-leading stretch built right in, wear after wear.