Foam Core

Foamcore, foam board, or paper-faced foam board is a lightweight and easily cut material used for mounting of photographic prints, as backing in picture framing, in for making scale models, and in painting.

Gatorboard

Gatorboard (or gator board) is type of display board with a dense inner core made of foam and a rigid exterior made of wood-fiber veneer. Gatorboard resists warping and is longer lasting.