Handmade and individually hand-tested for waterproofness in the UK, our socks have the most 4-way stretch available in any waterproof sock on the market. This gives way to incredible fit and comfort while flat seams along the toes help to prevent friction and blisters. Using a three layer construction including a unique hydrophilic waterproof membrane, the Waterproof Cold Weather Socks are incredibly breathable since the membrane moves moisture away from the skin at the molecular level using osmosis. This means our waterproof socks will keep you dry and on the move in wet and cold conditions. The addition of our unique Hydrostop technology creates a barrier to water ingress providing a secure fit between your leg and the sock. The sock cuff is closer to skin by using a silicone free elastic taping. This reduces the risk of water running down your leg while the soft taping has elastic properties creates a natural fit that stays secure during all sorts of activities outdoors. Features Waterproof and extremely breathable. Premium merino wool interior for moisture control, insulation and comfort. Machine washable, no special treatments required. Feels and wears like a comfy sock, a vast improvement over other stiff waterproof socks that wear like a wetsuit. Hand closed flat toe seams. Incredible four-way stretch for great fit and anti-blistering. Hydrostop barrier for water ingress prevention. Hand-crafted and tested in the UK for waterproofness by craftspeople who care about quality.