Verdict
Head-to-head · Best 2-Person Backpacking Tents

Big Agnes Copper Spur HV UL2 vs Nemo Dagger OSMO 2P

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Big Agnes Copper Spur HV UL2 comes out ahead by a narrow margin (4.7 vs 4.6). The gap is mostly about thru-hikers and frequent backpackers who can justify the premium for a tent that's both ultralight AND livable — read the strengths below before deciding.

Big Agnes Copper Spur HV UL2
Higher ratedRanked #1 in Best 2-Person Backpacking Tents
Big Agnes Copper Spur HV UL2
$600

The Copper Spur HV UL2 is the gold standard for full-feature ultralight 2-person tents. 29 sq ft of floor + awning-extendable vestibules + 39" peak height in a 2 lb 10 oz minimum-weight package is unmatched by any other tent at this weight class. The trade-off is the price — at $600 it's roughly double the Naturehike Cloud-Up Pro 2 — and the delicate 15D floor that demands a footprint to last. For backpackers who logged 100+ nights last year, this is the buy.

Strengths
  • 29 sq ft floor area and 39-inch peak height — most livable 2-person tent under 3.5 lb
  • Two large doors and two awning-style vestibules with trekking-pole support
  • Minimum packed weight of 2 lb 10 oz
Watch-outs
  • Most expensive pick in this round-up
  • 15D nylon floor is delicate — needs a footprint and careful site prep
  • Awning poles add a packed pole-set that competitors don't require
Nemo Dagger OSMO 2P
Ranked #3 in Best 2-Person Backpacking Tents
Nemo Dagger OSMO 2P
$530

The Dagger OSMO 2P is the comfort pick. The two massive trapezoidal vestibules (12 sq ft each — more than double the Hornet Elite's 7 sq ft each), Landing Zone gear tubs, and 42-inch peak make it the only tent in this lineup that genuinely feels like a 2-adult tent. OSMO fabric is the technical differentiator — PFAS-free, 3x less stretch when wet than nylon. Trade-off: it's nearly a pound heavier than the Copper Spur or Hornet Elite. Best for shoulder-season or 2-night trips where livability beats weight.

Strengths
  • Two massive trapezoidal vestibules — 12.1 sq ft each, the most vestibule space in this round-up
  • Includes Nemo's Landing Zone waterproof tub for each vestibule — keep dirty gear contained
  • OSMO fabric is PFAS-free, 100% recycled yarn, 3x less wet stretch than competitor materials
Watch-outs
  • Heavier than the Big Agnes Copper Spur HV UL2 and Nemo Hornet Elite OSMO 2P (3 lb 14 oz minimum)
  • Trapezoidal footprint takes more campsite space than rectangular alternatives
  • Less established field track record than the MSR Hubba Hubba LT

How they stack up

Big Agnes Copper Spur HV UL2

Most livable ultralight tent here. Beats the Nemo Hornet Elite OSMO 2P on interior space and the MSR Hubba Hubba LT on awning versatility, while undercutting both in packed weight. The Nemo Dagger OSMO 2P is more spacious but a full pound heavier; the Naturehike Cloud-Up Pro 2 is a third the price but heavier and less refined.

Nemo Dagger OSMO 2P

Most livable tent in this round-up — biggest vestibules and tallest peak. Heavier than the Big Agnes Copper Spur HV UL2 (by ~1 lb) and the Nemo Hornet Elite OSMO 2P (by ~2 lb). OSMO fabric is unique among Nemo's lineup; the Big Agnes HyperBead is a parallel technology. Wins on shoulder-season comfort; loses on minimum-weight thru-hike use cases.

Specs side-by-side

SpecBig Agnes Copper Spur HV UL2Nemo Dagger OSMO 2P
Packed Weight3 lb 8 oz4 lb 2 oz
Minimum Weight2 lb 10 oz3 lb 14 oz
Floor Area29 sq ft29 sq ft
Peak Height39 in42 in
Doors / Vestibules2 / 22 / 2 (12.1 sq ft each)
Body Fabric15D nylon (HyperBead)OSMO ripstop / no-see-um mesh
Floor Fabric20D solution-dyed ripstopOSMO poly-nylon ripstop, PFAS-free
ExtrasLanding Zone tubs included
← See the full ranking of best 2-person backpacking tents