The Stack-a-Roos™ STEM toy for toddlers is a sturdy 5-piece stacking tower with lights and sound. Get ready to stack! A new twist on the classic infant stacking toy, Stack a Roos lets your child stack pieces together to create a fun and adorable new animal friend! We’ve brought the zoo to your child’s bedroom with our precious Stack-a-Roo baby animals. This stacking toy will encourage kids to stack, build and learn. Watch as your baby girl or boy uses their critical thinking skills to arrange the stacking puzzle. Watch your child’s face fill with delight when they stack the pieces in the correct order and are rewarded with the base lighting up and triumphant music. The lights and audio sounds are a reward system and act as positive reinforcement for a job well done. The more your child plays, they will learn to recognize patterns and develop their fine motor skills, as well as foster counting skills. Stack-a-Roos pals are durable early learning toys that are built to last. Stackaroos are BPA and Phthalate-free and fully safety tested. These sweet, musical toys will keep your child entertained for hours. Stimulates fine motor skills and sensory development in boys and girls ages 12 months and up.