Senicx BB86 Ceramic Bottom Bracket CCACHE MARRICKVILLE Lightweight SHIMANO ULTREAD XC rubber stable fit no matter Lightweight SHIMANO ULTREAD XC rubber outsole delivers competition grade grip that lastsMesh TPU and synthetic leather material covered upper in optimized part provides comfortable fit and light weightBOA® L6 dial on instep strap quickly and comfortably secures a wide range of foot shapesGlass fiber reinforced midsole for power transferSurround wrapping upper structure reduces overlap and provides a glove like fitRider tunable spikes allow riders to select and swap spikes to match riding styles and conditionsLow stack height midsole helps stabilize foot Smart Assist automatic mode Mfr Claimed Weight Bearing Cup: Ceramic Bearing