Specifications: Diameter: 5.5cm / 5.5cm. Diameter: 7cm / 7cm. Diameter: 9cm / 8cm. Material: non-toxic silicone. Features: 1. Enjoy your time with your pet. Play in the park, in the pool or simply in the garden with your dog and enjoy the best moments with these interactive dog balls. Ideal for fetching or other play, these hard rubber balls can turn a boring afternoon into hours of fun for you and your pet. This dog ball swims in water and its smooth surface is easy to clean - just rinse with warm water. 2. Multiple colors and 3 in 1 pack. Our dog balls come in two different colors and three single balls included in this pack. The colors are combinations of blue, orange, purple, pink, red and yellow. Multiple colors make the balls clearly visible in any environment and easily recognizable from other animal toys. 3. Made of thick and durable natural rubber. If your dog chews all his toys. Don’t worry - practically indestructible, these dog balls are made from high quality durable