Constructed with Merino wool which provides an uncompromising fit, reinforced nylon stitching for durability and mesh knitting for breathability, midweight hiker is the perfect balance of warmth when needed and breathability when demanded. Heel, toe, and underfoot cushioning for comfort while hiking any distance. Merino wool for premium comfort. Additional elastic yarn for a perfect and snug fit. Reinforced with nylon for friction resistance. Flat lock toe to prevent irritation. Open mesh knitting for superior breathability. Merino wool 70%, nylon 15%, stretch nylon 10%, elastane lycra 5%.