Imagination Gesso is supplied in a 150 ml pot. Gesso is the perfect medium for priming MDF, Canvas and any craft project that requires a primer. Imagination Gesso is a water based primer which gives superb coverage and dries quickly. It can be applied with a sponge or rubber brayer roller, a brush or cut and dry foam. Clean up thoroughly with water and clean the edge of the pot before replacing the lid so that the Gesso does not dry and create small solid particles around the top of the container. Always replace the lid tightly.