The Kayenta is a brand new road shoe for Altra. The two layer upper construction is adaptable to a variety of foot volumes and shapes, while the strategic rubber pods on the outsole make it durable. The Max-LT(TM) midsole is responsive and firm. This is the perfect performance trainer for everything from triathlon to marathon to track workout. Features: - 2-layer Lightweight Quick-Dry Air Mesh and Neoprene lining - Balanced cushioning and zero drop design encourages proper, low-impact form - Footshape toebox allows your toes to relax and spread out naturally for more comfort and stability in uphill climbs and downhill descents. - Women's-specific fit - Lightweight, responsive MAX-LT midsole compound with an incredible cushion-to-weight ratio. - Footpod technology maps the bones and tendons of your foot to help it bend and move naturally. - 5mm Contour Footbed - Stack Height: 23mm - Weight: 4.9oz / 139g