Shimano Men's SH RC300W BICYCLE SHOES VeloVetta the 2:1 ratio and mild Belts the 2:1 ratio and mild formula digest quickly without bloating—ideal for intense training or racing airtight seal ntegrated seamless midsole and upper construction set a new level of fit stability and lightweight performanceOff set center flap mounted Boa® L6 dial creates a sleeker profile with quick adjustmentsSurround wrapping upper structure reduces overlap and provides a glove like fitRubber XC racing pattern outsole promotes stable pedal engagement and secure walking gripLow stack height midsole stabilizes foot and maximizes power transfer efficiencyPerforated synthetic leather composite upper enables superior fit and breathabilityLightweight glass fiber reinforced nylon sole for power transfer