Enjoy the winterized version of the Fresh Foam X More v4 with the Permafrost edition. The highest amount of Fresh Foam used in a single sneaker, this shoe is packed with more Fresh Foam X than ever, for a cloud-like yet stable ride. An innovative outsole places cushion in all the right places for a natural stride, plus the rocker sole adds a touch of extra luxe. And the durable ripstop upper keeps you wrapped with waterproof comfort and stability.