BEST FOR: Keeping your options open. THE TEST: Sometimes you need a huge vestibule (see the Big Agnes Wyoming Trail); sometimes you don’t need one at all. We like that the 38-square-foot Espri lets you choose. Go with a simple door flap and save a few ounces, or zip on the mammoth 24-square-foot, trekking-pole-supported vestibule ($130) for an all-weather kitchen. And though we generally prefer double doors, a single portal can be worth the weight savings, especially when it’s as large as the Espri’s. Egress aside, the NEMO is remarkably sturdy for a tall, four-and-a-half-pound tent, thanks to a trio of ultralight poles that intersect at three spots. THE VERDICT: We liked it best as a spacious two-person tent—three was a squeeze. 4.5 lbs
The thickness of technical fabrics like ripstop nylon, the dominant material used in tents, is expressed in denier. A standard tent floor is 70d, but to save weight the Espri employs a 30d fabric, so beware pitching on sticks or sharp rocks.