Dixie Belle Vegan-Friendly USA-made Synthetic brushes are made specifically for long-lasting use. The brushes are a specially formulated mixture of Nylon and Polyester tapered filament in different lengths and diameter ratios. The amount of tapered filament used in the mixture allows for a smooth release of the paint application onto a surface evenly. These brushes were developed to be more dense having a lot more filament in them.