Optimized for low weight without sacrificing comfort, a long-fiber carbon composite plate drives optimized pedaling dynamics. The Syncwire upper is a laminate of breathable ripstop fabric and durable film that conforms to the riders foot and keeps you cool but protected from the elements. Customize your fit with the Dual Zone BOA Fit System with LI2 machined aluminum dials and Giro's legendary Supernatural insoles, which include three height options of arch supports. And, when you have to hike-a-bike, be confident with their durable Sensor rubber, co-molded to that carbon composite core for a lightweight and permanent bond. Drop bars or flat bars, all-day explorations or 60 minute sufferfests, Gritter is the choice for low-weight, long-lasting, high performance shoes.