This dog backpack harness set includes a puppy backpack and a dog litter bag. The material of the dog hiking backpack is cloth and nylon fabric, which is waterproof, easy to clean and friendly to the dog's skin. The dog backpack has three backpack straps, two for the shoulders and one for the dog's belly. You can adjust all three straps to your dog's size, and the black buckles are quick-release and easy-to-release, keeping your pet . You can put items like dog bowls, poop bags, dog toys, dog hats, and more. On the side of the pack, you can put the poop bag inside and pass it through the expenser. If you want to attach the dog leash at the same time, the dog backpack has a metal D-ring at the bottom for you to attach, very convenient and sturdy, suitable for outdoor travel, camping, hiking, walking, running. We recommend that you use a rope to measure your dog's belly size, and you can choose the appropriate size dog bag. Our dog harness backpacks are suitable for small to medium sized dogs from 4.5 to 10 lbs. describe: Material: composite cloth Applicable: pets include: 1 pet backpack