Shimano's iconic SD5 (SD501) SPD Sandals offer unparalleled comfort for touring, bike-packing, and all-day wear, on or off the bike. This model features improved sizing for a better fit and a comfort liner that allows for sock-less riding, although wearing socks is highly recommended. A cleat cap is included for use with non-SPD flat pedals. The semi-rigid Power Transfer Blade enhances walking comfort and pedalling efficiency, with a lightweight design of just 720g per pair (size 42). The new SD5 boasts improved sizing and fit over the original, ensuring even greater comfort on long rides. Its comfort liner permits sock-less riding, though socks are still advised. For those not using SPD pedals, the included cleat cap allows the shoes to be used with flat pedals. The semi-rigid Power Transfer Blade significantly reduces power loss for efficient energy transfer and provides exceptional comfort for extended walking or hiking.