Bulletproof Pet Products Indestructibone is a virtually indestructible chew toy. It is made especially for those dogs that are tough on their chew toys. It has a small treat hole on each end so that you can add your dog’s favorite treat. Indestructibone Original is made for dogs up to 16-29 lbs. We take care of the 90 day replacement guarantee, you take care of the 30 day satisfaction guarantee. If someone returns an Indestructibone to you within 30 days of purchasing/receiving it, you would give them a refund. Then contact us and we will add that size for free to your next order. (of course if it isn't used, you may resell it). We will replace it free if it is chewed down to 4” or less in 90 days or less. Contact us and send us a photo of the Indestructibone next to a tape measure or ruler. Approximate measurements: 6” X 1.25” X 1.25”