Slipper Soles for your newly made felt slippers are essential! They will protect them and make them more wearable for longer. Also they make them safer and less slippery on wooden floors etc. They will also add a pretty "pop" of colour at the base of your lovely slippers which can make them look even more spectacular!
The ideal scenario is to sew on a felt sole with a suede sole underneath. This will provide comfort and a non slip surface too!