These are some seriously luxe socks. If you are not a wool-lover, or if you just like nice things in general, the SK5 is probaly the sock for you. Crafted from a silk blend, the final product is soft to the touch and offers an ultra-lightweight thermal insulation. The left-right specific fit of these socks makes sure that the minimal cushion is doing a whole lot of work in all the right places without compromising a precise and poweful fit.