The Northwave Sonic S. R. S. Shoes perform like a high end shoe without the high end price tag. Northwave uses NRG Air, Carbon reinforced soles to provide stiff power transfer and avoid zapping your bank account like full carbon options. With a venting system that keeps air moving around your feet, these shoes will keep you cool even on the hottest of days. The Sonics come complete with a Performance Advances footbed with arch support to keep your feet comfy and properly supported as you pedal down the road. Northwave's Slim Ratchet System S. R. S. pairs with two hook and loop straps to let you customize the fit so easily that you can even adjust them on the fly.