Color is randomly selected - Play with this gooey gunk from another planet for hours of glow in the dark fun. Stretch and bounce this play marbled martian sludge that comes straight from the red planet. This play mud comes packaged in resealable 3-inch x 2.25-inch container for easy transport and convenient storage. Slap it on the table and watch the slime slowly creep along the surface. Made using safe and high quality materials, this product is designed to last. Recommended for ages 5 and up.