A dense, yet lightweight, expanded polystyrene foam makes this material much sturdier than white Styrofoam. It’s great for wings, prototypes, vehicle bodies, intricate shapes, and many other applications. Available in 1" and 2" thicknesses. Sheets are sized 11.5" x 23.5". When the foam sheets are purchased in a package of 10, a sheet of template material is also included. Colors might vary.