RANGER-Dina Wakley Media Gesso. An artist quality primer, ideal for preparing all surfaces. Gesso provides a subtle texture called tooth for paint to grab and ensures smooth paint application. This quick-drying gesso provides opaque coverage and remains flexible after drying. This package contains one 4oz jar of black media gesso. Acid-free. Non-toxic. Conforms to ASTM D 2436. Made in USA.