This is the best applicator brush you can find.
The bristles are made from 100% premium horse hair - the only thing you want to use on your shoes. Just stiff enough to rub the polish in without harming your footwear.
The handle is sturdy Brazilian hardwood.
You use this to apply your shoe polish to your shoes. You'll want one for each colour of polish you are using.
This is a set of 2 brushes - one dark bristled and one light bristled.