The mountain stream shoe sole of the rubber sole model is focused on climbing performance and features a Vibramuidro grip that provides maximum grip.Climbing zones on the toe area are also available, so it can be used in a wide range of situations, from approaches to climbing and rocky climbing.The upper is reinforced with synthetic leather and rubber rounds, which are lightweight and easy to dry.3D mesh material around the ankle and tongue for a soft and comfortable fit.The last uses a 2E last for an excellent fit.Rounded heel area enhances the feel of the heel and prevents hitting and chafing.