Kids of all ages will think these rubber balls are super fun! Turn off the lights and watch these bouncy ball toys glow in the dark! Use these glow in the dark balls to add extra delight to a slumber party or Halloween night. Bulk-priced for extra value, you’ll receive 48 balls so everyone can share in the fun. (4 dozen per unit) 1" (25mm) Expose item to direct light to activate glow.