Premium- Shimano PD-M9100 off-road flat pedals are the next generation of the flagship XTR pedals. Increased drive train efficiency; an intuitive and seamless interface; and predictable steering and traction control make the M9100 series pedals the weapon of choice for WC cycling racers worldwide. Perfect fit and grip- Cylindrical contact area sheds mud even better for consistent stepping-in & out performance and rider confidence. Smooth and efficient- Wider edge-to-edge contact area provides solid shoe-to-pedal interface; transmits power more efficiently for faster and more consistent acceleration; and better bike control Light and durable- S/M 10.0x10.5 cm (469g) shoe size 36-43; M/L 11.0 x 11.5 cm (514g) shoe size 43-48 Warranty and use- 3 year warranty;.