Encourage kids to learn while they play with the Magnetivity Underwater Adventure Building Play Set from Melissa & Doug. Designed for ages 4 years and older, this 74-piece magnetic play set allows kids to build and create their own underwater adventures using magnetic panels and pieces. This innovative magnetic tile playset encourages kids to learn and develop important S.T.E.M. skills through play. Includes magnetic panels in various shapes (large square, small square, rectangle, large triangle, small triangle), magnetic interactive panels, magnetic accessories, vehicles, wooden figures, a base, dry-erase markers, and an eraser cloth.