2 years & up. The set of Translucent STEM Chutes and Stands is perfect for hands-on play experiences! Children will experiment with gravity as they watch materials move from one channel to the next and learn about cause and effect of as they try different positions and angels of the chutes and stand placement. Includes 8 plastic channels in 2 sizes and 3 powder-coated steel stands with 9 adjustable rings for easy height adjustment. Chutes measure 19.5"L and 39.25"L, stand is 47.5"H and 15.5"W.