This Backpack is perfect for people who just can't seem to leave home without their pet, the travel pet carrier acts as a backpack that you can strap to your back, or even works as a car seat that you can buckle in to your car so they're safe while driving. This Carrier comes with all the standard functions of a regular pet carrier, but also offers a mesh windows for your pet to look out at. A latch inside to hook to the animal's collar to keep them from abruptly jumping out or otherwise escaping when you open the backpack. side pocket which is convenient for using. The Roll Around 4-in-1 Pet Carrier works with both cats and small dogs, and come in a variety of colors to choose from.