No Assembly required - shake out and pop-up! * Seatbelt safety straps & fits on the seats of most cars & vans. * Oversized carrying case with shoulder strap and storage pockets. * Double zippered front door & smaller side door entry allows optional use of SturdiBag as "Extra Room * Pet Comfort Pad included ! Dimensions: 19D x 21W x 21H inches : 3.3 lbs