This set of soft stacking cubes with contrasting color patterns and rattle inside stimulates your baby to reach the developmental milestones of his first 6 months: Their large size, colors and squishy texture allow babies from 0 to 6 months to find them and hold them in their hands with ease. Thanks to their contrasting colors and visually stimulating patterns, babies will follow them with their eyes and look for them to play with, distinguishing them among the rest of the toys! Each cube has a bell inside that, when moved, emits a soft sound that will attract babies attention, encouraging them to look for it and follow it with their eyes. This set of soft cubes is not only fun, but also a sensory toy that helps stimulate babies from 0 to 6 months. Moreover, it can be washed in the washing machine! Engaging stackable cubes with visually stimulating colors and patterns Ages 0-6 months Each cube has a bell inside that, when moved, emits a soft sound that will attract babies attention, encouraging them to look for it and follow it with their eyes. 6 soft machine washable cubes Develops fine motor and gross motor skills