Sturdy bag with padded side walls. The main compartment with a double zipper is covered by an additional fabric flap, under which a jacket or sweater can also be stored. The bottle pocket at the back can be laid flat with a strap. Plenty of extra storage space is provided by large fold-out side pockets, one of which has a mesh pocket. The bag easily slides onto the Racktime carrier and locks automatically. To remove it comfortably, simply press the red button! Side pockets can only be used with carriers that have lateral support. Racktime adapter (included and already mounted). The Racktime adapter is the result of a successful collaboration between Tubus and Rixen and Kaul. The expertise of both companies was utilized to combine high-quality carriers with a perfect attachment system for accessories.