When we feel the need for speed We use the new lightweight model KEEN Zionic Speed. Like all KEEN shoes Zionic Speed ​​model provides comfort with a contoured fit which fits snugly to the foot and gives extra room in the toes. At the same time, they are lighter than other trail running shoes which lightens our load during fast hikes with light backpacks on our backs. Speed ​​can save us weight but it still features an air-injected polyurethane midsole for durable cushioning Achilles pad for added comfort and midfoot counter for added support when moving over rough terrain.