Simple, lovely and fun. Stimulate infants and toddlers senses with our set of three tumbling learning toys. Each tumbler features a unique 'sensation'. The baby blue sphere has a see-through center allowing children to see the 'rattler' inside. The peach sphere has fluffy cotton fibers in the center to stimulate a tactile sensation. The butter yellow sphere features a mirror, so children can reflect on what they see. As a bonus the hands on play of stacking, rolling, and grasping strengthens children's fine motor skills! This learning toy is comprised of sustainable rubberwood that is made in an environmentally friendly way, so you can feel great about adding this to your classroom or home.