This glow in the dark slime is composed of a glowing material that activates once exposed to daylight. Due to the different densities composed in the glow slime, it may separate over time (knead the slime before using). It is recommended for ages 3+. Imprint your company name and logo on the top to promote birthday parties, craft stores, day cares and more. Quantity ordered must be in increments of 24 pcs per color.