No matter how baby stacks it - the pieces fit perfectly every time! Unlike traditional stacking toys, Oball Anyway Stacker™ pieces are uniquely shaped to fit anywhere within the stacking tower. Five vibrantly colored pieces fit snugly in any order so baby can stack without pieces ever falling off. Each tower section is designed to be a base, top or middle piece and creates loads of fun combinations. Stimulating early cognitive skills and coordination, little ones use their imagination and creativity through interactive play.