The KONG Classic Dog Toy has been the providing four-legged fur balls with endless hours of fun for over thirty years. Make it a tasty puzzle and keep your friend entertained when he’s on his own by stuffing it with delicious treats, or bounce it around the house for an unpredictable game of fetch. Key Benefits Available in five sizes Built to withstand the toughest chewing Can be stuffed with treats and food Recommended by veterinarians and trainers Made in the USA Sizes Small, 3 inches: dogs up to 20-lbs Medium, 3.5 inches: dogs 15-35-lbs Large, 4 inches: dogs 30-65-lbs X-Large, 5 inches: dogs 60-90-lbs XX-Large, 6 inches: dogs 85 lbs