Mini Hummingbird Putty (heat sensitive)

This Thinking Putty® loses it's green color when exposed to heat, but springs back as it cools down. The magic of this putty will have you humming like a Humming Bird!

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.

Thinking 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, molding, bouncing, tearing, popping and playing by kids and adults alike.