Ladies and Gentlemen, These Easy Sandal Buckles are a great addition to any sandals or heels with any type of strap to get in and out of your sandals or heels easily. I’m using mine on Mary Jane straps and ankle straps heels I have. I’m even using them on my favorite pair of, Christian Louboutin Heels. Fast and Easy to install. Just follow the steps and you will be fine. Thank you Karen, superb job on design and great customer service. A+ I will definitely promote the ESB.