This cargo box is easy to take on and off, it's aerodynamic and simple to use. Opens from both sides and fits tons of stuff in it. I use it for skis plus cargo in the winter and I put pretty much everything in it in the summer.
I love my Thule AeroBlades. They are strong, aerodynamic, and look great! I have two pair in two different lengths, one set for my canopy and another for my truck roof. Make sure you can get the proper fit kit for your ride before you buy. They might not have a fit kit for your car if its an older model.
ABS is one of the most trusted airbag systems. Designed and developed in Europe so you know it's good. Two airbags means that if you pop one on a rock or something you'll still have enough flotation to keep you on the surface. Paired with The North Face pack you have the best of both worlds. I don't travel in the backcountry without it.