Dog-Gone Device pet backpack The hands free Dog-Gone Device is the first back-pack style animal carrier designed for your dog's enjoyment! he Dog-Gone Device includes a 10 to 18 inch adjustable pouch for a custom fit for a dog 20 pounds or less. (For the extremely small dog, a pad in the bottom may be necessary.) The lightweight, 2.0 pound design lets you transport your pooch safely and securely and is collapsible for easy storage. You can maintain your dog in a safe and secure position by sliding the collar provided through four safety loops located inside the pouch. Shoulder and waist straps adjust for a personalized fit.