This Product Measures: 5.5L x12.25W x3.1H. Strong dogs need strong chew toys. Made with tough, durable nylon, the Nylabone DuraChew Barbell was designed to withstand powerful chewers for long-lasting enjoyment while encouraging positive chewing habits. The allergen-free peanut butter flavor makes for a delicious chewing session while the nubs promote clean teeth and help control plaque and tartar buildup. (Different dogs have different chewing styles and strengths, even within the same breed, so be sure to choose the correct chew size and type for your dog.)