Unleash your inner mad scientist with Toysmith's vibrant two-color test tube slime! Watch mesmerizing color combinations swirl and stretch as you experiment with endless possibilities. Each 5.5-inch test tube contains 1.3 oz of premium slime in eye-catching assorted color pairs—perfect for sensory play, stress relief, and creative exploration. Ideal for curious minds ages 5 and up. Hours of gooey, colorful fun in a compact, portable package!