TWO-COLOR FUN Kids will love this mystery and sticky putty playset Just hold it in your hand and watch it magically change color depending on mood and temperature. Bright color combinations include yellow, purple, blue, and green in 4 individual jars. Multisensory Smudge - Heat sensitive and color changing putty helps develop fine motor skills including eye-hand coordination, builds strength, and improves hand and finger dexterity. Playing with it promotes calm, stimulates focus, and relieves stress, worry, and tension. CREATIVE ACTIVITIES This set serves as a reward and treat for student classroom participation. Knead, tear, and mold in the home, office, clinic, and playroom for a therapeutic feel and fun vibe. SAFE FOR KIDS Components are premium thermal chromium elements, hypoallergenic, and non-toxic. The clay is soft, bouncy, soft, bouncy, bouncy, bouncy, and comfortable to shape and stretch. Recommended for children 3+ years of age under adult supervision. Novelty Supply - Fun Learning Arts and Crafts Tools from Squeeze Craft - Makes the best birthday gifts, stocking stuffer gifts, school or carnival giveaways or Halloween trick or treat bag fillers and activity centerpieces.