Nerf Dog Assortment: 2.5in LED Bash Ball 2-Pack, Blue and Green, Dog Toy Lights up: LED lights make this toy even more fun after dark Interactive: one of a kind colorful lighted toy that will keep your pet playful and engaged for hours. Ridges on ball make it easy for your dog to pick it up Textured hexagon pattern on outside make this ball easy to grip when slobbery Perfectly Sized: 2.5-inch ball is great for small breeds