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 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. FEATURES – Glows in the Dark. Expose to light to see it glow at night– Safe, Soft, and Fun– Day or Night Play– Durable, Non Toxic, Easy to clean– Floats Available in assorted colors.