These ready-to-paint, tempered hardboard panels are factory-coated with gesso. They're excellent for oils, acrylics, gouache, egg tempera, or pen-and-ink.
Panels have a smooth surface. Each panel is 1/8" (3 mm) thick.
Note — The permanence of tempered hardboard as a painting surface is unknown. Paintings are known to have survived intact from the 1930s.