Elite Professional Watercolor Brushes - Nature, Improved! The New York Central brush makers didn't just try to imitate the characteristics of Natural hair they set out to create something superior and succeeded with Oasis! The brushes were created by combining centuries of brushmaking knowledge with the latest technology. Each brush is made by blending different filament diameters, taper ratios, and lengths. A computer simulation determines the precise combination of filaments before Each brush is assembled by hand. Over 30 types of synthetic hair are blended to accurately imitate Natural hair. This attention to detail results in a soft, extremely absorbent brush that holds its shape well and has great snap. One of the first brushes Designed using computer simulation for every single brush. This will outshine virtuAlly All brushes! Each brush has the optimal combination of hair to maximize its performance. This yields a uniform brush response and Color-holding ability. Oasis brushes are extremely thirsty and can hold a large amount of water and Paint compared to other brushes. After working with these brushes, you will be amazed by how well they perform.