Shimano calls this their Pro XC racing custom fit mountain bike shoe. The XC90 has tough but comfortable Rovenica ultra-fine fiber synthetic leather uppers, low profile micro adjust buckles, Cross X hook and loop straps and heat moldable Custom-Fit insole technology.
Upper: Rovenica synthetic leather
Multiple layer moisture controlling mesh
Anti-slip heel lining
Last: Shimano Dynalast XC
Sole: XC race specific outsole with a lower stack height
Carbon fiber midsole shank and outsole plate
Custom-Fit heat moldable insole with adjustable arch wedge
Cross X hook and loop straps
Low-profile micro adjust buckles
Mud-shedding polyurethane outsole lugs
Low-profile toe spikes
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