Thick weight, mid length waterproof sock perfect for a multitude of activities and conditions where added insulation is imperative. Constructed with our proprietary Stretchdry waterproof, breathable and windproof technology Thick weight sock providing warmth in the coldest of conditions Thicker Merino wool lining for moisture control and comfort Elasticated ankle and instep offers additional support Y-gore heel construction provides a secure comfortable fit Padded heel, toe and footbed absorb shock and guard against pressure and friction, reducing the risk of blistering Hand linked toe closure, creates a flat seam to prevent rubbing MATERIAL 90% Nylon, 10% Elastane Hydrophilic Membrane 42% Merino wool/42% Acrylic/ 14% Polyester/ 2% elastane