Thin weight mid length sock for a multitude of activities where maximum breathability and calf length coverage are required totally waterproof breathable and windproof merino wool lining for moisture control comfort elasticated ankle insteps offer support and a comfortable fitmaterial composition 87 nylon 13 elastane hydrophilic membrane 51 merino wool 30 polyester 15 acrylic 3 elastodiene 1 elastane