PU leather, suitable for most fabrics. This patches would make a great decoration for your elbow or knee part. It can be cut arbitrarily for small area. Use your creativity, make your clothes /bag different, pretty and interesting. Elbow knee oval patches can be used for mending or decorating garment, especially when there is a hole or a spots. These sew on patches can repair a tear, worn area or hole, and extend the life of your favorite clothes.