Clipless pedals aren't just for advanced riders anymore. The Shimano PD-T421 SPD Pedal is a great choice for cyclists looking to try out riding clipless for the first time. The PD-T421 utilizes Shimano's Click'R Design, a technology purpose-built to make clipping in and out quick and simple. It uses a light, easy-to-engage cleat spring that is strong enough to keep your foot attached firmly but light enough that you can remove your foot at a moment's notice.