Shimano SH-RX600 Women's Gravel Shoes Gravel-Ready, All Day Long Gravel riders who put in big mileage need a shoe that pedals efficiently and still lets them walk the rough sections without suffering. The SH-RX600 Women's delivers that balance with a carbon-reinforced sole that sits at 8 out of 12 on Shimano's stiffness index, stiff enough to transfer power cleanly through every pedal stroke with just enough give to handle hike-a-bike stretches without complaint. DYNALAST technology locks your foot in place to cut power loss at the pedal, and the optimized toe-spring geometry takes tension off your feet, calves, and hamstrings on long days out. The women's-specific last gives a fit designed for this foot shape, not a scaled-down version of the unisex model. Features Carbon-reinforced sole 8/12 on Shimano's stiffness scale for efficient power transfer with walkable flex DYNALAST technology secures your foot at the pedal interface, reducing power loss and fatigue on long rides BOA L6K dial closure with forefoot strap micro-adjustable fit you can dial in without stopping Micro-perforated synthetic leather upper with mesh insert ventilation and temperature regulation on hard efforts Gravel-specific TPU lug outsole traction on and off the bike across mixed terrain Optimized toe-spring geometry reduces tension in feet, calves, and hamstrings over long distances Women's-specific last shaped for a natural, comfortable fit without compromising performance | Shimano | Sh-Rx600 Women's Gravel Shoes | Size 37 In Gray/purple