This hedgehog always has a smile on his face, a magical rainbow sky is his ultimate happy place. Look at your Thinking Putty® sparkle and shine, it will make you as joyful as this Happy Hedgehog, knowing everything will be fine. Thinking Putty® helps build hand and finger strength through a fabulous tactile play experience with unique, unexpected properties and provides relaxing, yet stimulating interaction for anyone with sensory integration issues.