INTERIOR SPACE – Backpacking tents keep weight to a minimum by limiting interior space (and thus, use less material). Most two-person tents have room for two sleepers and a few stuff sacks, with backpacks and extra gear stored in the vestibules. If you want more interior space for camping comfort, you may want to bump up one size in tents (for example, buy a 3-person tent to fit 2 hikers). Just remember, interior tent space is a tradeoff between comfort and weight. If you prefer hiking light and crushing miles, stick with a 2-person model for two hikers. If you’re willing to carry more weight for camping comfort, you may want to bump up one tent size.
CAPACITY – 1-Person tents are great for dedicated solo adventurers looking to hike fast and light. 2-Person tents tend to be the most popular, because they strike a good balance between weight and interior space, just don’t expect the interior to be palatial. 3 & 4-Person tents tend to get crowded and impractical, though they can be a good fit for 2 or 3 hikers wanting more interior space for gear storage and extended hangouts.