Now you and your best friend can keep playtime going long after sundown. Just 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 drool-encrusted tennis balls – Fetch & Glow by Spunky Pup® is easy to clean, waterproof and even floats. So, wherever the fun takes you — to the dog park, the beach, or just around the house — Fetch & Glow will keep your dog running, jumping and fetching … Day or Night!