Bob ross products are manufactured with care, from the finest materials. They are individually evaluated for quality and performance so novices and experienced painters alike can achieve optimum results in the wet-on-wet painting technique. The bob ross technique depends upon a wet surface to work into. These liquid oil colors serve as slow-drying base coats designed to provide a proper oil painting surface. These oil colors are specially formulated for his wet-on-wet painting method. Quality ingredients insure permanence, color intensity, and professional results. This package contains one 236-milliliter can of liquid oil paint. Conforms to ASTM D4236. Made in USA.