When every gram counts. Every, single, gram. At 150 grams (size 42.5) these shoes completely change the game for any rider looking for the maximum advantage out of their gear. The Giro Prolight Techlace Road Shoe is the ultimate expression of a pure performance shoe. The shoe balances ultralight construction with best in class pedalling performance using a stiff TeXtreme Advances Composite outsole and Techmesh constructed upper. When coupled with Giro\\\'s award winning Techlace closure system, you have the ultimate lightweight, performance and comfort cycling shoe. Key Features: > The Giro SuperNatural Fit System combines a cycling-specific footbed with an adjustable arch support kit. By simply choosing from any of the Low, Medium and High arch supports included in the kit, riders and fitters can independently adjust arch support to enhance fit and pedaling efficiency while reducing or eliminating common discomforts > The Techlace system is an extraordinary patent-pending design that couples the benefits of laces with the convenience of a strap for superb fit and easy adjustment on-the-fly. By replacing D-rings and other hardware with laces, the Techlace system provides a more supple feel across the forefoot. > Textreme® carbon fiber is woven in flat sheets instead of threads, producing a carbon fiber thats ultra-stiff, yet lighter because it requires less resin. In fact, in our shoe outsoles, it has the same stiffness profi le as the Easton SLX II outsole but with a 22% weight savings. > Welded Monofilament Mesh is a customized monofilament fiber reinforced with technical mesh fabric and welded to a Teijin® TPU film. This combination provides structure and durability where you need it, and significant weight savings. The result is superb comfort without stretch, to maximize your power.