The SealSkinz Starston Waterproof Cold Weather Mid Length Socks was born from taking the original waterproof sock and ramping up the features so it can take on both the cold and rain. The Waterproof Cold Weather Mid Length Socks will keep you dry and warm in leaky waders, through stream crossings, and in rain, snow, and mud. These cold weather socks are crafted using a three-layer bonded construction that combines a 100% waterproof hydrophilic membrane with a premium Merino wool interior for warmth and sweat-wicking, and feature a durable nylon blend exterior with 4-way stretch for a great fit. Designed with warmth in mind these socks are constructed with the finest Merino wool and an added a layer of terry-loop knitting. This loop knitting traps heat within the air pockets keeping you warmer when you're in the coldest conditions. Boasting the perfect mix of waterproofness and breathability, waterproof socks are ideal for keeping your feet dry and warm while cycling, commuting, working outside, fishing, or hiking. Crafted with a seamless construction including hand-linked flat toe seams and the addition of elastic support on the ankle, heel and instep, you won't notice the seams but will definitely notice the extra comfort and fit.