Made with tough, durable nylon, the long-lasting Power Chew DuraChew Barbell Chew Toy was crafted for powerful chewers to enjoy. 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. Go ahead and give your dog a Nylabone! Made in the USA! Size L/XL.