The waterproof bike briefcase with roll closure can be mounted on the right or left side of the rack. It can be quickly mounted and easily taken off the rack single-handed. Two large 3M Scotchlite reflectors and a reflective ORTLIEB logo (except silver version of PD620 fabric) ensure safety in the dark and in bad weather conditions. Edge protectors and base feet on the rear and bottom ensure optimal protection of the bag. It features a padded shoulder strap for comfortable transport. The bag is available in two versions: with QL2.1 or QL3.1 mounting system.This bag with the Quick-Lock3.1 mounting system comes with the studs neccessary for luggage racks that feature QL3.1 compatible mounting points. If you want to use the bag on a rack without an integrated QL3.1 mount, you will need an additional mounting set. The mounting set weighs only 140 g and attaches securely to the rack. Our Quick-Rack comes with all the neccessary parts, you don't need the studs nor the mounting set.Specificat