Each kit includes 24 items: 1 wave board, 2 simple boards, 1 quarter circle board, 1 multi-purpose board, 2 cubes, 6 one-half cubes, 3 bricks, 2 bumpers, 4-39" L poles, 2-23.5" diameter hoops. All polypropylene units easily interlock allowing users to quickly assemble components in a multitude of ways to challenge individuals or groups of children. Bricks and half cubes can be filled with sand for added stability. Sturdy ABS poles with molded anti clip-out tips can be attached to the bricks and fixed in an upright position to provide added strength or used like ski poles. Comes in a duffel bag for storage. Includes instruction booklet. 3-year guarantee.