This stick toy is engineer-designed and made from virtually indestructible material. Built for long-lasting use. Ideal for small-breed dogs who are tough chewers. Designed for safety—the 2-layer design is built with a red safety indicator that lets pet parents know if the central core has been reached. Perfect for fetching and chomping. Encourages activity and supports a healthy lifestyle. Easy to clean, simply use warm water to wipe the ring toy clean after a long day of playing. Small ".75" green stick Dimensions: 1.31 inch cross section/7.25 inch length Suitable for dogs 10-25lbs Durability scale score: 50 Medium "original" green stick Dimensions: 1.75 inch cross section/9.75 inch length Durability scale score: 70.