Get your dog in your vehicle without helping or lifting them. Offers freedom to walk in and out of car truck or SUV by themselves. Easily slides down and locks with safety latch for storage. Extends from 47" to 87" long. High-traction surface and side rails keep your dog from slipping. Lightweight so it is easy to lift in and out of car. Collapses down to 39" long. Tested and rated to support pets up to 300 pounds. Dimensions: 47-87"L x 17"W x 4"H.