The Rollerloader's patented design makes it easy for one person to quickly top their vehicle with their favorite kayak without scratching their car. Enables you to easily load your boat without having a permanent attachment on your car or rack. The Rollerloader is independent of the car rack system and quickly attaches to your vehicle using two vacuum suction cups and two anti-slip straps. Can be used on the back or front of the car, whichever is lower and easier to lift to. Comes fully assembled and ready to use. Weighs less than 10lbs., and stores conveniently in your car. Works on all types of cars, wagons, and SUV's.