Transform playtime into a dynamic learning experience with these six water-filled blocks in two playful shapes. Children can mix and match the blocks by lining them up and stacking them to explore new colors and patterns that encourage curiosity and visual exploration. Made from sustainable rubberwood and filled with non-toxic tinted water, the blocks are smooth around the edges for your child's safe, fun, and durable play. Easy to use with no assembly required…just combine and wonder. PlanToys is a globally trusted leader in environmental innovations and award-winning educational toys. Let each stack stimulate your imagination.