Nzo Trails Socks are the latest incarnation of a much loved and well-tested design. A sock is more than a tube that is closed at one end, and this one is optimised for mountain biking. An open mesh knit on the top of the foot, combined with Coolmax in the fibres, keeps things cool, while a generous cushion in the sole makes them luxuriously comfy. A sturdy and generous welt knit top provides some protection for the ankle bones and stays in place. When you get them they look pretty long, but they sort of adjust themselves to fit and are getting rave reviews from test pilots.