Adjustable hook-and-loop straps ensure a secure, locked-in fit. Wide closure enables easy on and off. An external plate combines with compatible cleats for a firm connection to the pedal. The heel pull tab helps avoid unnecessary slippage. The responsive internal plate offers optimal energy return. Rubber under the heel and toe provide superior grip and traction. Please feel free to contact me with any questions you have. These are $120 brand new and never been used. See pics for details. Reasonable offers welcome.