The greatest hits of the Ooze Labs series: Five fun and simple science experiments for slippery, slimy, goopy, oozy, awesome chemistry! Includes a test tube rack and 5 individual Ooze Labs tubes: Fast-forming Crystal Feather, Thermocolor Slime, Glow-in-the-Dark Slime, Instant Snow, Quicksand Oozebleck "Sneaky" science: Introduces scientific concepts in a fun and engaging way. Party favors & stocking stuffers: Each Ooze Labs tube measures under 6 inches tall, making it the perfect size and an affordable choice for use as a party favor, stocking stuffer, or Easter basket goodie! Safety first: Includes safe, non-toxic materials and an instruction manual that guides experimentation.