The Sports Trunkbag Small is a handy shoulder bag suitable for Racktime luggage carriers. The bag has a pre-mounted Snapit Adapter, which can be adjusted for narrow and wide Racktime luggage carriers. Simply click the bag onto the carrier and remove it after use with one swift motion. The bag has a rain cover and reflective elements on three sides. The main compartment can be extended. The bag also has three inner compartments and a bottle holder at the back of the bag.