This adorable Tiger Tribe Koala Silicone Stacking Toy from Bigjigs Toys is a baby teether, puzzle and sensory toy all in one. A cute koala sits on top of five different-sized stackable teething rings, all with varying textures. The soft food-grade silicone stacking rings are easy for little hands to grasp and examine. They are specially designed to soothe and comfort sore gums. Suitable for children from birth, tots can develop hand-eye coordination and fine motor skills by stacking the koala tower in different combinations.