Indoor/spin shoes are specifically designed for stationary bike use, and they're worth considering if you ride indoors regularly. They feature breathable uppers to keep your feet cooler during intense sessions without airflow, and they're compatible with common indoor pedal systems like LOOK Delta (used on most Peloton bikes) or SPD (found in many spin studios).
The simplified closure systems—often a single wide strap—make them easy to slip on and off, which is convenient for class settings. They also tend to be more affordable than road or mountain bike shoes since they don't need weatherproofing or aggressive tread.
However, indoor shoes aren't built for outdoor riding. They lack the tread, durability, and weather protection needed for road or trail use. If you already own road shoes with LOOK Delta cleats, those will work fine on a Peloton. But if you're primarily an indoor rider, dedicated spin shoes offer the right balance of comfort, compatibility, and value.