Purchased the leather touch up kit and repair kit to fill a hole about two inches squared. Very easy to use (you tube tutorial is very good). Used hairdryer to speed the process up which made it much quicker. TIP when colouring just put a very small amount of the base colour in to the cup provided (no more than up to the first line of the cup). After I mixed the brown with a bit of black to get a darker brown finish, I dabbed a bit of black on top of the brown to blend in with the rest of my sofa. So good you wouldn’t know it was there unless you were looking for it. Highly recommend.