Maximum space efficiency across a wide range of vehicle fits;Thule Force XT Large 635800 Powerclick:Easy to mount thanks to the PowerClick quick-mount system. The integrated torque indicator clicks when it’s properly mounted, ensuring fast and secure fitting;Thule Force XT Large 635800 Key protector:Comfortable to open and close thanks to the LockKnob that also helps to prevent damage to the Thule Comfort Key;Thule Force XT Large 635800 Dual side opening:DualSide opening provides easy access to all areas of the box, from either side of the vehicle;Thule Force XT Large 635700 Trunk access:Full trunk access with minimal risk of contact with the cargo box, thanks to its forward position on the vehicle roof