We sure are glad to have the Women's Hoka Hupana Slip-On back in the mix. The key feature of this shoe is the midsole material that goes straight to the ground. There's no need for carbon rubber here. It makes the shoe feel like its conforming right to the foot. We can't think of a better design for a super comfortable slip-on. Perfect as a travel shoe, casual shoe or anything where comfort and ease are most important.