Another thing to consider is type of cleat you want. It can be on top of the sole, as on most road shoes, or is recessed inside, as on most mountain-bike shoes. Recessed cleats make a big difference in terms of comfort and safety when you're ready to get off the bike and walk around. Float is the mechanism that lets your foot move around on the pedal, so your leg moves naturally. Early models didn't have this, and cyclists were prone to knee injuries as a result.
Various brands have different degrees of float, and some models have adjustable float.
Just remember, especially if you're buying pedals secondhand, that this is an important feature for performance, safety and comfort. All rights reserved. The material on this site may not be reproduced, distributed, transmitted, cached, or otherwise used, except with the prior written permission of Nutricise. Inc. Please read our Privacy Policy . Use of this site constitutes acceptance of our User Agreement .