Big Agnes Copper Spur UL2 vs NEMO Dagger OSMO 2P (2026)
Two freestanding, two-door, two-vestibule backpacking tents at the same official $599.95 price. The official difference is weight, floor area and peak height — and this is the current Copper Spur UL2, not an older HV UL2 label.
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How this page was made: this is a research-based guide built from manufacturer spec and pricing pages and the findings of the reviewers we name and link. We haven’t field-tested these products ourselves, and we don’t give scores. How we pick.
Quick answer
Choose Big Agnes Copper Spur UL2 ($599.95) if you want the lower official weights and the 19.5 × 4 in packed size. Choose NEMO Dagger OSMO 2P ($599.95) if you want the official 30.6 sq ft floor, 12.1 sq ft vestibules and 43 in peak.
Last updated Prices checked Nov 2026
Check Big Agnes Copper Spur UL2 price (opens in a new tab)Check NEMO Dagger OSMO 2P price (opens in a new tab)
Key facts at a glance
| Big Agnes Copper Spur UL2 | NEMO Dagger OSMO 2P | |
|---|---|---|
| Official price | $599.95 | $599.95 |
| Weight | Trail 2 lb 10 oz / 1.18 kg; total 3 lb / 1.37 kg; fast-fly 2 lb 2 oz / 955 g | Minimum 3 lb 5 oz / 1.51 kg; packed 3 lb 15 oz / 1.8 kg |
| Floor | 29 sq ft; 88 × 52–42 in (tapered) | 30.6 sq ft; 88 × 50 in |
| Peak / head height | 40 in / 102 cm (official head height) | 43 in / 109 cm (official peak height) |
| Vestibules | 9 sq ft + 9 sq ft | 12.1 sq ft + 12.1 sq ft |
We compared these two-person freestanding tents using Big Agnes’s official Copper Spur UL2 page and NEMO’s official Dagger OSMO page, both fetched November 10, 2026. Both listed $599.95 for the two-person version. Official fabrics differ: Big Agnes describes proprietary HyperBead (15D nylon with 20D solution-dyed ripstop, 1500 mm, without intentionally added PFAS on that copy); NEMO describes solution-dyed OSMO ripstop (1500 mm fly, 2000 mm floor) as a bluesign product. We have not rain-tested either fly.
Choose the Copper Spur UL2 if official packed weight matters more than a few square feet: $599.95, trail weight 2 lb 10 oz / 1.18 kg, total weight 3 lb / 1.37 kg, fast-fly weight 2 lb 2 oz / 955 g, packed 19.5 × 4 in, floor 29 sq ft (88 × 52–42 in), two 9 sq ft vestibules, and a 40 in head height. Choose the Dagger OSMO 2P if official livable area and peak height matter more: $599.95, minimum weight 3 lb 5 oz / 1.51 kg, packed weight 3 lb 15 oz / 1.8 kg, packed 20.0 × 6.5 × 3.5 in, floor 30.6 sq ft (88 × 50 in), two 12.1 sq ft vestibules, and a 43 in peak. We haven’t pitched either tent, and we don’t give scores. This official Copper Spur page is the UL2, not a leftover HV UL2 SKU.
Big Agnes Copper Spur UL2 vs NEMO Dagger OSMO 2P: side-by-side
| Big Agnes Copper Spur UL2 | NEMO Dagger OSMO 2P | |
|---|---|---|
| Official price | $599.95 | $599.95 |
| Weight | Trail 2 lb 10 oz / 1.18 kg; total 3 lb / 1.37 kg; fast-fly 2 lb 2 oz / 955 g | Minimum 3 lb 5 oz / 1.51 kg; packed 3 lb 15 oz / 1.8 kg |
| Floor | 29 sq ft; 88 × 52–42 in (tapered) | 30.6 sq ft; 88 × 50 in |
| Peak / head height | 40 in / 102 cm (official head height) | 43 in / 109 cm (official peak height) |
| Vestibules | 9 sq ft + 9 sq ft | 12.1 sq ft + 12.1 sq ft |
| Packed size | 19.5 × 4 in / 50 × 11 cm | 20.0 × 6.5 × 3.5 in / 51 × 16 × 9 cm |
| Doors / structure | Dual doors, freestanding, DAC poles, 11 of the 6 in Dirt Dagger UL stakes included | Dual doors, freestanding, DIAPOLE aluminum poles, Divvy Cube stuff sack |
What are the pros and cons?
Big Agnes Copper Spur UL2: pros
- Lighter on official weights (2 lb 10 oz trail / 3 lb total vs 3 lb 5 oz min / 3 lb 15 oz packed)
- Same $599.95 official price, with an official fast-fly weight of 2 lb 2 oz
- Smaller official packed size (19.5 × 4 in)
Big Agnes Copper Spur UL2: cons
- Smaller official floor (29 vs 30.6 sq ft) and vestibules (9 vs 12.1 sq ft each)
- Lower official head height (40 in vs 43 in peak)
- Tapered official floor (52–42 in) is not the same rectangle as the Dagger’s 88 × 50 in
NEMO Dagger OSMO 2P: pros
- Larger official floor and vestibules, and a 43 in official peak
- Official OSMO fly and floor with 1500 mm / 2000 mm ratings, and a Divvy Cube stuff sack for splitting the pack
- Same $599.95 official two-person price
NEMO Dagger OSMO 2P: cons
- Heavier: 3 lb 5 oz minimum and 3 lb 15 oz packed
- Larger official packed dimensions
- A 3-person Dagger is a different SKU — do not use those 42.8 sq ft numbers for this 2P comparison
Which should you choose: Big Agnes Copper Spur UL2 or NEMO Dagger OSMO 2P?
At the same official $599.95, the Copper Spur UL2 is the lighter, smaller-packing official kit, and the Dagger OSMO 2P is the roomier official kit (more floor, much more vestibule, 3 in more official peak height) at a real weight cost. We have not pitched either tent. If you need the lightest official number in this pair, it is the Copper Spur’s 2 lb 10 oz trail weight — with the usual caveat that trail weight is not the same as packed weight. If you want the official 43 in peak and 12.1 sq ft vestibules, it is the Dagger.
Choose Big Agnes Copper Spur UL2 if…
- You want the lower official weights and the 19.5 × 4 in packed size
- A 29 sq ft tapered floor and 9 sq ft vestibules are enough
- You may use the official fast-fly mode at 2 lb 2 oz with a separately sold footprint
Choose NEMO Dagger OSMO 2P if…
- You want the official 30.6 sq ft floor, 12.1 sq ft vestibules and 43 in peak
- You will accept 3 lb 5 oz minimum / 3 lb 15 oz packed at the same $599.95
- You want to split the packed tent in a Divvy Cube-style sack
This is the current Copper Spur UL2, not an HV leftover
Big Agnes’s official page we fetched is the Copper Spur UL2, SKU TCSUL2TGO25, $599.95, with HyperBead fabric and a 40 in official head height. Older “HV UL2” naming still appears in leftover dealer copy around the web. We only cite the official UL2 page we fetched on November 10, 2026. If a seller lists an HV UL2, treat it as a different SKU until you can read a current official spec sheet for that exact name.
What two reviewers measured, and where they disagree
OutdoorGearLab’s Copper Spur UL2 review, dated June 16, 2026, listed a $600 price and a 3.1 lb packaged weight, about 29 square feet of interior space, a 40-inch peak, two 9-square-foot vestibules, and 15-denier nylon on the body, floor, and fly. Better Trail’s NEMO Dagger OSMO 2P review, dated May 3, 2025, listed a $600 price, a 3 lb 15 oz packaged weight, a rectangular 88 × 50 in / 30.6 sq ft floor, a 43-inch peak, and 12.1 sq ft vestibules, and compared the Copper Spur at 3 lb, 29 sq ft, 40 inches, and 9 sq ft vestibules. CleverHiker’s Copper Spur UL2 review, last updated September 29, 2026, also listed $600 and measured 3 lb packed, with 29 sq ft and 88 × 52/42 × 40 in dimensions. Those are the reviewers’ figures, not tests we ran. We report the 3 lb versus 3.1 lb packaged-weight disagreement and do not merge protocols or republish numeric scores.
Who should skip both of these freestanding tents?
- Ultralight hikers who want a sub-2 lb trekking-pole tent. See the X-Mid 2 vs X-Mid Pro 2 page.
- People shopping a 3-person Dagger or a Copper Spur UL3. Those official numbers are not this table.
- Car campers who want standing-height livability. Official peaks here are 40 and 43 in.
Frequently asked questions
Which tent is lighter?
Which has more floor space?
Do they cost the same?
How tall are they inside?
Is this the Copper Spur HV UL2?
Sources
Prices, specs and land-unit rules were checked on the pages below as of Nov 2026. Brands and land units change prices and rules often, so confirm them on the seller’s or official land-unit page before you buy or go.
- Big Agnes: Copper Spur UL2 official product page (price, trail/total/fast-fly weights, floor, vestibules, head height; fetched Nov 10, 2026) (bigagnes.com)
- NEMO: Dagger OSMO official product page (2-person price, weights, floor, peak, vestibules; fetched Nov 10, 2026) (nemoequipment.com)
- OutdoorGearLab: Big Agnes Copper Spur UL2 Review (dated June 16, 2026; $600 list; 3.1 lb packaged; about 29 sq ft; 40-inch peak; two 9 sq ft vestibules; 15-denier nylon; fetched Nov 10, 2026) (outdoorgearlab.com)
- Better Trail: Nemo Dagger Osmo 2P Backpacking Tent Review (dated May 3, 2025; $600; 3 lb 15 oz packaged; 30.6 sq ft; 88 × 50 in; 43-inch peak; 12.1 sq ft vestibules; Copper Spur compared at 3 lb / 29 sq ft / 40 in / 9 sq ft vestibules; fetched Nov 10, 2026) (bettertrail.com)
- CleverHiker: Big Agnes Copper Spur UL2 Tent Review (last updated September 29, 2026; $600; packed weight measured 3 lb; 29 sq ft; 88 × 52/42 × 40 in; fetched Nov 10, 2026) (cleverhiker.com)
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