When you want to travel with your pet outdoor;When pet is ill, you must take it to the pet-hospital;When you hope to training your pet;Please buy this! * Rounded corners protect your home decor and auto interior from bumps and scratches.Material: Fabric 600D, PVC coating * A removable, washable pad ensures the cleanness of the bag.Cool mesh ventilation with zippered front door and top loading door * Airline approved, side and top mesh windows * Exterior pockets for toys and treats.Foldable steel frame, black painted steel, inner plastic mat.