When we feel the need for speed, we slip into the new KEEN Zionic Speed for lightweight performance. Like all KEEN footwear, the Zionic Speed keeps us comfortable with a contoured fit that's built to fit around our feet, giving us extra room in the toes. At the same time, it's lighter than other trail shoes, lightening our load for fast hikes with light daypacks on our backs. The Speed may save us weight, but it still features an air-injected PU midsole for durable cushioning, an Achilles pad