- Has about 75 percent more floor area
- Is $130 more expensive
- Is about two pounds heavier
Both tents have otherwise very similar designs and construction.
Both get similar reviews. Which one should you get? If you are getting a light tent you should get the absolute lightest one that fits your needs. For most people, that will be the UL2. But if you want more space or are in a group of 4, the UL4 is the way to go.
Check out our full Backpacking Tent Review where we compare the UL2 to other top tents.