The O2 Tent from The North Face is one of only two models we tested in the ultralight review that comes with everything you need for set-up. This dedicated-pole double-wall tent provides great weather protection in all but the strongest winds, and the unique U-shaped overhead pole creates more headroom inside than most similarly light two-person double-wall tents. While this isn't one of the lighter shelters we tested, it is relatively roomy and simple to set up.
The Big Agnes Fly Creek HV2 Platinum also is a dedicated-pole double-wall tent, and is much lighter and a better overall performer, but costs considerably more than the O2. However, if you want the lightest double-wall tent with the best weather protection, the Fly Creek is the clear winner. The O2 Tent is a great choice if you're on a tight budget. You'll find several very light two-person tents in our Backpacking Tent review as well.