Before they're old enough for structured music lessons, help kids find their inner Mozart through play and experimentation with the Stacking & Nesting Music Instrument Set. They’ll use the drum, xylophone, rattle, scratch board and mini-gong to compose their first symphonies while they master shapes and spatial reasoning. The five boxes can be stacked in any way kids wish, as well as played with individually. (They also stack back into themselves for easy storage.) Your little ones will soon be absorbed in the combinations of sounds and their endless possibilities and delights. Made primarily of plywood with ABS plastic, rubber, and metal details, each Stacking & Nesting Music Instrument Set undergoes rigorous safety and quality control testing including chemical, bite force, and sharp point tests, and box measures 4.9h x5.5w x 5"d. Ages 18 months+.