The Avery 02746 PerfectHold Bumper Flasher is a versatile and durable dog training aid designed to promote a soft mouth and easy grip. Its six flat sides provide a comfortable surface for dogs to hold onto, reducing the tendency to chomp or release the bumper prematurely. The V-grips on this bumper also help to encourage a softer mouth, making it an ideal tool for training retrievers. With its everlasting leak-proof valveless design, you can be sure that this bumper will withstand even the most rigorous training sessions. Fast shipping ensures that you can get started with your training right away.Key Benefits and Features: Label: Dimensions Value: 10" Length / 3" Ends / 2" Center Label: Floating Throw Rope Value: 10"