Strengthen hands and fingers by twisting and squeezing the Aku Ring, and build sensory input with the bumpy nodules on the surface while you’re at it! Firm so they develop muscle when bent or twisted, these rings do not stretch and tear when tugged. Pull with both hands to get gross motor skills involved, or play tug-of-war with a partner! Also a fun fidgety toy. Not recommended for teething or chewing.