Your adoring fetch machine probably does not care that the sun went down, so get the Chew King Glow Balls for Dogs. Our glow-in-the-dark fetch balls compensate by being easy to find in low-light conditions. with charge under the light, high performance fetch balls can last for 30 to 45 min. of playtime. Vet-recommended Chew King dog fetch ball toys are made using only thoroughly tested, pet-safe materials. Durable, fun and designed to outlast even your super chomper or fetch machine's most vigorous play. Plus, there's a fun toy for every active part of your pup's day -- fetching, treating or playing. Try a dog toy ball today and you just might say, 'Hail to the King!' The fetch ball will fit in the medium Chew King ball launcher (sold separately).