The Thule Bike Set turns the child carrier into a practical bike trailer. It is compatible with any existing bike type and is very easily attached to the rear wheel via an aluminum tow bar and a special quick release. To provide safety on the road, a reflector set and a practical pennant are also included. The extension is GS tested and easy to use. With it you can modify any child carrier from Thule, except for the Chinook series. Get the Bike Set to take your kids safely from A to B! ;"