The Fizik Transiro Infinito R3 is a triathlon bike shoe with a combination of a Powerstrap and Boa® dial for a quick and secure closure. It combines a stiff outsole with a quick foot entry and fine tuneable fit on the go. PU laminated mesh upper gives you ventilation and support and a R3 full UD carbon outsole for a direct power transfer. The mesh upper is highly breathable yet effectively supportive, thanks to the PU lamination on targeted areas that ensure all power is efficiently transferred to the pedals. The Volume Control system allows a differentiated fit adjustment for the instep and forefoot areas – the shape and volume of which can vary widely between athletes. The combination of a Powerstrap and a BOA dial is the ideal balance for an Olympic format: first a quick and secure closure, then a fine tuneable adjustment for a precise fit. The volume of the forefoot area can be controlled via the Infinito, a signature fit adjustment feature. Infinito balances out the tensioning and further eliminates pressure hot spots by using textile webbing in place of plastic lace guides. This closure system acts on a larger area of the shoe’s upper, pulling the eyestays inwards consistently from all directions for a more supportive and comfortable fit. The race stiff R3 unidirectional full carbon outsole delivers ultimate power transfer and it has been modified with extra wide ventilation cutouts, boasting even greater breathability than its road counterpart.