Jolly Bone The Jolly Bone is designed to be stretched twisted tugged bounced & chewed but always return back to its original shape without compromising it s durability. Key Features: unique shape provides the perfect grip from any angle ridges on the ends massage your dog s gums as he chews available in different sizes to fit any dog Sizes: small (6 ): 1-20 lb medium (8 ): 20-50 lb large (9 ): 50+ lb Important: Never leave a pet unattended with any treat or toy!