DESIGN: Quick and easy slip-ons allow speedy prep before hitting the trail or road 2-3 bolt offers compatibility with standard SPD and SPD-DL pedals, meshing smoothly with a wide range of bikes 3 hook and loop straps IN-SHOE COMFORT: Stretchable upper material exterior creates flexi-comfort to fit easily, allowing an excellent match with your foot, using integrated X-Comfort Zone technology Cool and comfortable interior with breathable and ventilating material on insole and outsole, featuring injected, fiberglass/nylon Ergo Air Stream outsole, offering full breathability underfoot to eliminate hot feet after long rides while reducing fatigue and easing numbness