Solid Bamboo - 100% bamboo from fibers all running in the same direction. Composed of many strips bonded together.
Engineered Bamboo - Bamboo top wear-layer bonded to other core and backing layers in a "sandwich" style that includes fibers running perpendicular to the top and bottom. Provides greater stability regarding expansion and contraction
Composite Core Bamboo - Typically three layers with the center layer made of composite fiber board.