Bundle: Grow and Glow-in-the-dark; CLEAR and BLUE over 1,100 Amazing Cosmo Beads(tm) Water Marble Balls ;Great for Gift Giving As Stocking Stuffers. Kids of All Ages Will Love'em. by Cosmo Beads 1,100 +Grow and Glow-In-The-Dark CLEAR and Blue clor; Cosmo Beads (Tm)-Specialty Fun Beads - Science Educational Product A great tool for when you teach water cycle and evaporation Grow and Glow-In-The-Dark COSMO BEADS! A novelty item for kids of all ages. Simple directions make them ideal for anyone to use; the young/elderly. Fancy Package great for gift. Reusable up to 2 years, Non-fade, Non-Toxic, 100% Biodegradable, Non-Flammable. Harvest Size: Each pack (10 grams. About 550 beads) of Grow & Glow-In-The-Dark COSMO BEADS Under maximum hydration (10 hrs.) will yield about 5-6 cups of round bouncy GLOW-IN-THE -DARK crystal water beads.