Now you and your best friend can continue playing long after sunset. Simply expose the ball to light and watch it glow in the dark. This soft, durable, non-toxic toy is great for indoor or outdoor play. Say goodbye to slime-encrusted tennis balls: Spunky Pup's Fetch & Glow is easy to clean, waterproof, and even floats. So wherever the fun takes you, to the dog park, to the beach or just around the house, Fetch & Glow will keep your dog running, jumping and searching... Day or night! Available in fun neon colors.