Filling PasteThe filling paste is a flexible, colored solution to repair holes, cuts and scratches on leather and synthetic materials. It creates a soft, flexible layer. It also can be used on rubber (e. g. soles). How to use Remove dust. Apply with a roller or a spatula the necessary thin layers to cover completely any holes or the scratches to be repaired. Let it dry between layers for approximately one hour. It is important to not apply too much quantity of the