【18 Pieces CASTLE NESTING STACKER】 Features 10 castle themed stacking cups and 5 brightly colored shapes - including a square, triangle, star, circle, and hexagon. 【LEARNING SKILLS】 Stack cups on the castle base to build a tall tower, up to 28 inches (73cm). Turn the castle base upside down to play shape sorter. It can also be used as a storage box. Encourage kids to tidy up after themselves and keep the place tidy. 【DEVELOPMENTAL BENEFITS】 Help to learn colors, shapes, and spatial recognition. Build sorting and size skills, stacking skills, counting skills and fine motor skills. Encourage problem solving, eye-hand coordination and imaginative play. 【SAFE & NON-TOXIC】Made from child safe and durable materials. Compliance with toy safety standards. Pieces are smooth surface and no sharp edges. Perfect size for small hands to hold and play. Great gift idea for babies, toddlers, and early learner aged 12 months and up. This set comes in total 18 pieces. Includes 10 stackable cups, 1 storage castle base, 1 base lid, 1 castle top, and 5 geometric shapes blocks. With this amazing 10 stackable cups, babies have hours of fun sorting, stacking, and nesting.