The Stack N Chew Cube Set (Set of 6)The stack n chew mini cube is a developmental teething toy. It's bpa free and made of food grade silicone making it safe for baby's tender gums. the flexible holes help strengthen baby's gripping skills. The contrasting modern colours stimulate hand eye coordination and promote motor skills such as stacking and carrying. easy to travel with, it encourages imagination even for water play! Package contains 6 mini cubes. Set of 6 mini chew cubes Soft