The Pet Life ® 'Glow-Stick' TPR and LED Lighting Squeak and Chew Dog Toy is composed of a Soft, Lightweight and Highly Durable Rubber-like material that provides strong resistance to bite. This unique interactive toy completely lights up in the dark for a fun night time outdoor fetching and tugging experience. The Glow-Stick also glows in the dark for added fun and conservation of batteries. The Durable TPR outer material is specially structured to further provide high-buffering capabilities to the interior battery components that won't break when tossed around or chewed on. Includes 3 CR-2032 batteries for approximately 4 months of usage. Available in Multiple Colors. SIZING DIMENSIONS: (INCHES) L x W x H 9.45 X 2.17 X 2.17