Known to be magical, majestic, and relaxing, waterfalls are often found in the most beautiful places on earth. Reflecting this natural wonder, Falling Water Thinking Putty® is a crystal-clear blue that shimmers with iridescent edges to simulate moving water. Play with it when you need a moment’s peace…or whenever you need to go with the flow. Liquid Glass® putty becomes cloudy with use and changes back to crystal clear. The Liquid Glass® collection includes Falling Water, Rose Lagoon, Lily Pond and Morning Dew. Liquid Glass® is the only Thinking Putty® collection that stands alone in putty properties. Liquid Glass® will never have the elasticity that the other putties do; they simply don't have the composition. Liquid Glass® stretches a bit before breaking and does not bounce. This Thinking Putty® is meant to be enjoyed for its transparency. 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.