Our goal was to make a shoe for those who want to spend more time running and less time worrying about laces. That's why the Surge 3 Slip doesn't have any, so you can just slip them on and go!, Lightweight, breathable mesh upper. Enhanced cushioning around ankle collar for superior comfort. Stretchy, slip-on design for easy on/off. Cushioned EVA midsole delivers a lightweight & responsive ride. Strategically placed rubber pods on outsole for durability with less weight, Offset: 8mm. Weight: 9 oz.