Charge into rough and chundery trails feet-first with the Shimano GR903 Mountain Bike Shoes, ready to shred the bike park day in and day out. The GR903 shoes excel on big terrain, thanks to its burly construction that's designed for riders who like to push the limits. Tough uppers, protection where it's needed, and breathability to keep hot-foot at bay are just some of the features that make Shimano's new gravity-specific flat shoe a fan favorite.