Genuine Mercedes Modular Travel and Style System, Base Module with Universal Hook The Mercedes modular system takes advantage of head restraint elements which are simple to fit and remove, and centres around a base support which can be combined with an array of products. The universal hook provides a convenient space to hang clothing, coats, shopping bags, and various other items. The large aperature of the hook allows multiple itemsto be hung at the same time. Please note: for safety reasons, the folding table should be removed if passengers are travelling in the rear of the vehicle.