Northwave's Extreme Triathlon is 100% pure speed with zero compromise. Power transfer is unsurpassed with ultralight carbon soles with several mesh vents to allow airflow over your feet. Comfort comes in the form of the microfiber upper with BioMap construction to perfectly contour to your feet. To make that first transition as quick as possible, two Velcro straps make it simple to just hop on the bike and go. Chances are good that you'll be wet and sweaty, so Northwave created the Extreme Air feetbed to keep your feet fresh.