This waterproof & breathable sock is comfortable & warm The part of the sock that is next to your skin has a large Merino wool content which means it is warm comfortable & naturally anti bacterial Specially developed for trekking in arduous wet environments these Dex Shell Waterproof Trekking Socks are a fantastic addition to your outdoor gear We were so pleased to hear that these Dex Shell Waterproof Trekking Socks received a Commended award in the Best Footwear Category from the prestigious Camping Magazine Awards 2016 as these fantastic waterproof socks are a fantastic addition for your winter hiking gear & make an extremely thoughful gift for anyone who loves to spend time outdoors