Balsa wood is a lightweight and soft wood derived from the Ochroma pyramidale tree, native to Central and South America. It is known for its low density, making it one of the lightest commercial woods available. Balsa is often used in model building, crafts, and various applications where weight is a concern. Due to its excellent strength-to-weight ratio, balsa wood is popular in the construction of model airplanes and kites. It can be easily cut, shaped, and glued, making it a favorite among hobbyists and professionals alike. Its natural properties also allow for good buoyancy, which is useful in boat building.