These wall hangings are made out of solid Colorado cut beetle kill pine, and then dyed. They are then finished with a heavy coat of polyurethane to preserve the wood and colors. The wall-hangings also have key slots in the back, so that you can hang them from nails or screws in the wall. There are five different sizes offered; small (8" x 12"), medium 1 (10" x 15"), medium 2 (12" x 18"), large (16" x 24"), and an X-Large (24" x 36"). In the second picture the sizes are stacked on top of another to show the different sizes. The one on top is the small, then medium 1, medium 2, and then the large size. In the third picture, the small and large size are compared. Color within the pine may vary.