Dog Harness Backpack is specially designed to help your furry friend carry all their essentials during an evacuation or just hiking or camping. With this backpack, your dog can help share the load and make the evacuation process a breeze.   The X-Large Harness Backpack weighs 7.6 pounds fully loaded and has enough supplies for a dog up to 70 pounds for 72 hours.  If you have a larger dog you might need to add more food and water. Note: It's not recommended for a healthy dog to carry more than 25% of their body weight.