1.Note Before BuyingThe pet carrier is specially designed for carrying medium-sized dogs and cats. We strongly recommend that you choose this carrier for four-legged children under 22 pounds (10kg). Please confirm the weight of your pet before purchasing the product to prevent the pet from having a bad travel experience. 2.5 Opening Design4 Legs Out and a head outlet design, so that your pet can be safer and more comfortable in the back bag. The design of the head elastic band can better adapt to the head circumference of the dog or cat. The design of multiple outlets ensures air circulation. 3.Safe DesignThis hands-free pet carrier is equipped with a belt with a safety buckle, which you can attach to your pet collar. This is designed for more naughty dogs. It can not only prevent the dog from moving, but also protect it from falling from a height. The D-shaped buckle can also provide convenience for you to carry dog bowls or garbage bags, picking up poop bags, etc. 4.Two Ways to WearYou can wear the backpack on your front or back at will, and you can also choose different vertical or cross shoulder straps. With thicker shoulder pads and back pads, it helps to reduce your shoulder burden. Make your trip with your dog more comfortable and free. 5.Enjoy your tripThis backpack is lightweight and portable, you can use it to carry a medium-sized dog or cat for outdoor activities such as cycling, hiking, camping, outings, or meeting friends. In addition to being suitable for ordinary pets, it is also suitable for cats and dogs that have not recovered from illness or surgery.