These sealskinz mens thick weight mid length socks are totally weatherproof highly breathable and designed to perform across a varied range of activities and conditions a rugged nylon and elastane shell with a hydrophilic membrane covers a merino wool lining to create a supportive sock which offers exceptional weather protectionactivitywalking hikingcolour swatchgreyperformancewaterproof breathable stretch wickingbrandsealskinzcolourgrey