May cause listening fatigue. Make sure you wear socks with them though. Only purchase it if you want to hang jewelry, scarves or other light items. The case is a little bulky and could have been designed a little differently to reduce its over all size. I purchased these because of the size. I suppose if you have bars on top that will not be an issue. I ordered a size 4 and a size 6 because I thought I might be in between sizes. Once installed the hooks can hold a great deal of weight and are excellent at keeping areas tidy and organized. I do not recommend this keyboard to anyone. It never clasps right.