TCX RT Race Pro Air Boots– BlackTCX RT Race Pro Air Boots UPPER_durable, lightweight perforated microfibre, over injected front panel to allow an easy step in and a precise fit around the foot leg; lateral microinjected panel to facilitate zip closure, padded rear flex area for a better comfort; newly designed, abrasion resistant microfibre heat guard to offer the best grip on the bike frame, instep micro injection with Iron mesh air intake. F. F. C. Fasten Fit Control, lacing