Crazy Aaron's Thinking Putty, Mixed by Me Thinking Putty Kit, Glow in The Dark Collection: MIXED BY ME | Includes 5 clear tins, 6 special effects putties (3 Color Concentrate, Sparkle/Glow/Shimmer), colored pencils, and instructional mat Stretch it, bounce it, pop it, tear it, and sculpt it! Fun for ages 8+ Includes five clear tins and six special effects of Genuine Crazy Aarons Thinking Putty Thinking Putty is manufactured with the help of exceptional individuals challenged with disabilities Made in the USA from nontoxic silicone and never dries out