Tuve unos hace mucho tiempo, recuerdo que se escuchaban super bien y me duraron años hasta que se me rompieron. But I am not slim footed either so they are an average fitting. I will probably buy some as gifts for friends in the future. Then after having a bunch of it together I read that the unit must be attached to a wall. Also has several lighting features which I?m still playing around with to see which catches the cars attention more effectively. My big toes rub against the material in front. This item fits perfectly love the straps so as I loose weight I can still tighten. plastic and polyester, not comfortable. It is very sturdy (even with a heavy curtain) and took two seconds to easily and securely install. I decided on these since they were cute, well-reviewed, and moderately priced.