Ever since getting this desk riser about 3 weeks ago I have felt better and no longer have the back/leg pain that I was having. I have to have lower back surgery later this year and this is one of the things the doctor recommended for me to get. The keyboard tray is big enough for my ergonomic keyboard and mouse. How if there could be an extension for my desk phone I will be happy with that. I love this desktop and will be using it a lot this year.