Thank you for viewing. These are lace material pumps. They have a strap, and the heels are thick and sturdy, so I think they're comfortable and won't make you tired easily. I used them once, but after that, I've kept them stored at home, so I think they're almost like new. The size is S, and I usually wear shoes that are 22.5-23cm. Please feel free to ask if you have any questions.