Socks.

When the campfire just isn’t enough to keep you warm and your feet need a little extra help heating up, Brushtail Possum Socks are an ultralight must have. Made from a combination of New Zealand's brushtail possum fur, and New Zealand Merino lamb's wool, these socks are sure to keep your toes nice and toasty. These socks are very thick and warm! They are rugged enough to hike in on cold days, and they also make excellent sleep socks. They are great for winter sports as well.