Incorporating colour shock technology, Eternal Flame burns bright. It smoulders with fiery red glitter and reveals a blazing blue flash when stretched. 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. Crazy Aaron's putty is non-toxic, won't dry out, and won't leave a sticky or slippery residue on your fingers, so it's great for stretching, moulding, bouncing, tearing, popping and playing by kids and adults alike.