Princeton Artist Brush Neptune, Brushes for Watercolor Series 4750, Oval Wash Synthetic Squirrel, Size 50 A beautiful range of shapes including mottlers and quills with rich wood tones and sea glass aquarelle handles Our softest and thirstiest synthetic brush, delivering oceans of color More durable and affordable than squirrel Soft and Supple with even release of color The wash brush is shaped with a head that is more square than a flat shader and is a larger size. The blend of hair and taper of the brush make it good for applying washes or floating and blocking in large areas of color.