The SIDI Racing Boots REX are a result of SIDI's many years of experience, proven in the toughest motorsport events, including MotoGP. These modern boots are immediately noticeable for their three separate buckles, which ensure an optimal fit. The boots are designed with reinforced ankle protection made of fiberglass, integrated with significantly improved heel protection. Together, they form an incredibly stable boot that won't get stuck in the asphalt in the event of an accident. Inside the boots, soft materials are used at the right places, such as the opening, heel, and in front of the ankle, to provide comfort and flexibility, which usually seem impossible in a boot offering such a high level of protection. Ventilation holes are present throughout the boots, including on the replaceable toe sliders, and these can be opened. The perforated version features DuPont® polymer reinforcement over the gear area, Teflon-treated perforated fabric on the inside, and a reinforced racing sole for a good feel on the footrests.