PUREBOOST GO SHOES Built to handle curbs, corners and uneven sidewalks, these natural running shoes have an expanded landing zone and a heel plate for added stability. A lightweight and stretchy knit upper supports your native stride. Energized cushioning works with the flexible outsole to give you a smooth and comfortable ride. Regular fit Knit upper Flexible Stretchweb outsole; Fitcounter heel for unrestricted fit Responsive Boost midsole Lightweight and supportive