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Stretch and pull this gooey putty and watch as it changes color in your hands. The thermochromic goo reacts with the heat from your hands to slowly shift in hue. Flexible in shape and consistency, the putty can be rolled in a ball and bounced, or stretched to a sinewy wisp. The putty is entirely non-toxic, made from top shelf materials that have been tested for purity. It contains no latex or wheat compounds, making it safe for those with sensitivities. The Thermo Collection includes two colorways: one that'll shift from deep purple to bright pink, and one that transforms from vivid orange to sunny yellow. It's a wonder that delights kids of all ages, and works as a great teaching tool for the curious-minded future scientists in your life. Suitable for ages 3 and up with parental supervision.

Silicone putty
45 grams (each tin)
Made in the USA
See packaging for care details