Balsa-Foam® is different from other plastic foams because it carves easily with traditional and non-traditional hand tools and can be decorated with any paint just like balsa wood. Balsa-Foam® has a density of 5lb. per cubic foot and is great for students because sharp tools are not required. Balsa- Foam® II has a density of 10 lb. per cubic foot and is also easy to carve but holds intricate detail. Balsa-Foam® has no memory so it holds any impression.