These sustainably-made sensory toys offer a satisfying chew and can help them strengthen grasp and dexterity as they hold, squish, roll and throw the balls. If used as a teether these balls are designed for younger teeth however if squashing, gripping and twiddling as a fidget these are great for all. The set comes with a small yellow ball which you can nest inside the larger grey ball. Challenge curious bambinos to see if they can work out how to pull the smaller ball out! A fun game for helping little brains develop. These sensory balls are made from 100% food-grade silicone, so they're a great alternative to plastic and make a perfect eco gift for earth-conscious families. Activity Balls product features: 2 grey and yellow sensory balls Soothing toy teether Made from 100% silicone Easy to clean and stain resistant Dishwasher safe Suitable for 12+ months