This make-your-own sensory tube is as captivating as it is cute! Just fill the clear tube with the included materials—glitter, pom-poms and two mystical unicorns—and add water. Seal the tube with the twist-on top and cover it with the textured sensory cap, then give it a shake…and watch the contents whirl, swirl and dance! Dishwasher-safe plastic tube measures 8 3/8" in length.