Designed for both indoor and outdoor use, the Explor'action blocks are easy to assemble and can be changed at will. They allow children to master their motor skills and thus gain confidence and take initiative in their physical abilities. Consists of: 1 Inclined slat, 1 Flat slat, 1 Rock, 1 20" diameter hoop made from plastic. For indoor and outdoor use. Comes with Teacher's Guide.