Why not buy a cost-effective and versatile pet bag? 1.Convenient disassembly and assembly of the wheels. The four wheels correspond to the four buttons at the bottom of the bag. Simply push the buttons to easily install and unload the wheels2.This soft-sided dog backpack is made of Eco-friendly polyester, durable to withstand scratching. Providing roomy space for your pet to stay comfortable during the trip. Easily fits most small, medium sized dogs and cats 3.Removable mat in backpack have two side for all seasons. At the bottom it comes with a comfortable soft pad for your pet to rest, which is removable and washable for easy cleanig. One side is cooling farbic for summer, one side is warm farbic for winter. 4.Ventilation & Easy Interaction: One small round zipper which make it possible for your pet to stick his head out.Convenient for the owner to comfort the pet. One large round zipper and the front door zipper easy for pet entrances.You can feed or play with him without putting the carrier bag down. The top pad could be rolled up for convenience.Four breathable mesh windows are designed for visibility and air ventilaion. During the journey the pet could have a good view of the surroundings and breath freely, so that they will feel relaxed and peaceful. 5. Telescoping handle stores out of the way just like a suitcase.Telescoping handle: industrial grade aluminum alloy Rods. Wheels: high-quality polyurethane double wheels provide extra stability and durability. 6. 3 Pockets provide room for store. Pockets on both sides, one side is bottle pocket and the Dog Poop Bag Holder , other side is zipper pocket for you put any dog snacks, toys and other essential supplies. 7.Comfortable to Wear: Both the back and adjustable shoulder straps of the dog backpack carrier are equipped with extra thick padding, which help to relieve the burden of your shoulder and back, making it more comfortable to wear. Great for traveling, riding, camping, hiking.