Waterproof Knee length Hiking socks from Sealskinz Stretchdry technology - waterproof, breathable and windproof Thermally activating - perfect balance of warmth and breathability Merino wool lining - moisture control and comfort Elasticated ankle and insteap - supportive and durable Y-gore heel - helps with rubbing and is more flexible Padded heel, toe and footbed - absorbs shock and guards against pressure and friction, reducing the risk of blistering Hand linked toe closure - creates flat seam to prevent rubbing Hydrophilic membrane - 90% nylon, 10% elastane Body - 38% merino wool/38% acrylic/22% polyester/2%elastane Recommended activity - hiking / skiing / climbing / camping