For over 15 years I was using such a support. Well, he had ended up doing his time. So I was very happy to see this offer on which - if I may say so - I jumped in with both feet. So why only three stars? Well because the tissue that covers the wrist rest is a bit too rough. And so it does not slide enough either. Maybe with time it will happen. Unless it is I myself who do it. Go figure. Meanwhile, it's worth it 2 stars even if I do not totally regret this purchase and I make my usual day long.