Sherpa Pet Group’s All-in-One Backpack Pet Carrier has a mesh side entry door, side window, and panels for ventilation. It comes with a durable adjustable over the should strap that converts to a backpack strap. Has a durable padded bottom board for stability for you and your pet. Also comes with 3 roomy zippered pockets for food, treats, or toys. It has a washable faux lambskin liner.