he Thule Stroller Rider Board is designed to be mounted onto the back rear axle of your Thule Stroller allowing an older child to ride on the back of your stroller. The attachment of the Thule Rider Board onto your Thule Stroller is done by first putting on the parking brake. The Rider Board is then attached onto the rear axle, you should hear an audible click upon proper installation. We recommend carefully reading through the instructions prior to first installation.