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Big Agnes Copper Spur Tent vs TarpTent Arc Dome 2

Editorial Team
Last modified at August 9, 2026
When every ounce matters, choosing the right ultralight backpacking tent can make or break your backcountry experience. The Big Agnes Copper Spur Tent and the TarpTent Arc Dome 2 both target weight-conscious backpackers, but they approach the challenge with very different philosophies—one prioritizing intuitive usability and proven reliability, the other pushing interior volume and weather resilience at the cost of setup complexity. This comparison breaks down how they stack across the categories that matter most on the trail.

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Big Agnes Copper Spur TentTarpTent Arc Dome 2
Big Agnes Copper Spur Tent
TarpTent Arc Dome 2
Weight

2 lb 10 oz min; 3 lb packed

3 lb 9.8 oz min; 3 lb 15.9 oz typical

Floor Area

29 sq ft

32.5 sq ft

Pole Material

DAC NFL

DAC aluminum or Tarptent carbon fiber

Number Of Doors

2

1

Number Of Vestibules

2

1

Warranty

Manufacturing defects

N/A

Bathtub Floor

N/A

6 in

Fabric Type

Rainfly/Floor: HyperBead 15D/20D nylon
Tent Body: 59.1 in

30D fly; 30D silnylon floor

Packed Size

19.5 × 4 in

16.5 × 6 in

Tent Capacity

2

2 or 3

Vestibule Area

18 sq ft

N/A

Zipper Type

N/A

YKK #5

Floor Space

29 sq ft

32.5 sq ft

Durability

Big Agnes Copper Spur Tent

4.6/ 5.0

TarpTent Arc Dome 2

4.1/ 5.0

Durability in an ultralight tent is about trusting that your shelter won't fail when you're miles from the trailhead. For backpackers, this means materials that resist abrasion, poles that withstand wind stress, and hardware that doesn't snap after repeated use. The Big Agnes Copper Spur Tent earns a strong 4.6/5 with extensive owner praise for its ripstop nylon body, DAC poles, reinforced injection-molded cross poles, rubber tips, and silicone-reinforced stress points—many report a decade or more of hard use. The TarpTent Arc Dome 2 scores a respectable 4.1/5, with buyers appreciating its triple-siliconized nylon, Ultra TNT material stiffness, and sturdy pole structure, but some note issues like line lock hooks breaking and end caps pulling off. While both use quality materials, the Copper Spur's broader track record of longevity under relentless use gives it a clearer durability advantage for most buyers.

Weather Performance

Big Agnes Copper Spur Tent

4.7/ 5.0

TarpTent Arc Dome 2

3.8/ 5.0

Weather performance determines whether you stay dry and stable when storms roll in unexpectedly. For two-person ultralight tents, this means effective rainfly coverage, hydrostatic head ratings that don't saturate, and structural stability in wind. The Big Agnes Copper Spur Tent achieves 4.7/5 with its 1500mm hydrostatic head rainfly, PFC-free waterproofing, and bathtub floor that owners confirm handles heavy rain and wind without sagging. The TarpTent Arc Dome 2 scores 3.8/5—it handles wind well when pitched taut and performs in winter conditions, but buyers frequently mention flapping noise, Sil nylon stretching when wet, and difficulty sleeping through howling wind despite the tent remaining structurally intact. The Copper Spur's more consistent storm protection and confirmed waterproofing make it the safer choice for unpredictable weather.

Comfort

Big Agnes Copper Spur Tent

4.4/ 5.0

TarpTent Arc Dome 2

4.8/ 5.0

Comfort in a backpacking tent translates to livable space, headroom for changing clothes, and storage that keeps essentials within reach. The Big Agnes Copper Spur Tent scores 4.4/5 with steep walls, dual doors, large vestibules, and thoughtful gear storage pockets that buyers find roomy for two adults, even accommodating 6'4" users. However, the TarpTent Arc Dome 2 edges ahead at 4.8/5 with its exceptional interior volume, good headroom, and spacious feel that owners consistently praise—some even pairing it with thick 4.6-inch sleeping pads and still finding ample room. The Arc Dome 2's unique arc-shaped design maximizes usable space in ways that make it feel significantly roomier than typical ultralight options. For backpackers who spend extended time in camp or simply value not feeling cramped, the Arc Dome 2's comfort advantage is meaningful.

Ease Of Setup

Big Agnes Copper Spur Tent

4.8/ 5.0

TarpTent Arc Dome 2

1.8/ 5.0

After exhausting miles on the trail, the last thing you want is a frustrating tent pitch in fading light or worsening weather. Ease of setup directly impacts your daily energy and camp morale. The Big Agnes Copper Spur Tent excels at 4.8/5 with color-coded webbing, intuitive pole design, reflective guylines, and a quick-stash door keeper that buyers describe as 'dead easy,' 'so easy,' and the 'easiest pitching tent' they've used. In stark contrast, the TarpTent Arc Dome 2 plummets to 1.8/5 with persistent complaints about narrow pole sleeves, finicky pole insertion, stiff crossing sections, and frustrating takedown—buyers warn it requires patience, practice, and is especially challenging in wind. This isn't a minor difference; it's a fundamental usability gap that affects every single camp setup.

Ventilation

Big Agnes Copper Spur Tent

4.4/ 5.0

TarpTent Arc Dome 2

3.9/ 5.0

Proper ventilation prevents condensation buildup that can leave you waking up in a damp sleeping bag, particularly during temperature swings or humid conditions. The Big Agnes Copper Spur Tent scores 4.4/5 with mesh panels, adjustable top vents that prop open with poles, and an 'incredibly breathable' design that buyers find 'very airy.' The TarpTent Arc Dome 2 manages 3.9.getcwd9/5 with carbon fiber vent tubes and dual side vents that provide 'significant venting,' though some buyers note flapping noise when vents are open and occasional condensation issues. While both tents offer functional airflow, the Copper Spur's more versatile and quieter ventilation system provides more consistent comfort across varying conditions.

Bug Protection

Big Agnes Copper Spur Tent

4.4/ 5.0

TarpTent Arc Dome 2

3.3/ 5.0

Bug protection is non-negotiable for three-season backpacking, where mosquitoes, flies, and no-see-ums can ruin sleep and morale. The Big Agnes Copper Spur Tent scores 4.4/5 with fine mesh walls, secure door seals, and a 'big bug net' design that keeps insects out completely. The TarpTent Arc Dome 2 lags at 3.3/5 with minimal buyer feedback and a 'solid inner' that offers less confidence—its description even acknowledges gaps that can let insects in. For anyone camping in buggy environments, this difference alone could be a dealbreaker.

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Conclusion & Final Verdict:

Choose the Big Agnes Copper Spur Tent if: you want a proven, hassle-free ultralight shelter that sets up in minutes, protects you reliably in storms, and won't let bugs in. Its 1.5+ pound weight advantage, lifetime warranty, and intuitive design make it ideal for thru-hikers, frequent backpackers, and anyone who values camp simplicity after long days.

Choose the TarpTent Arc Dome 2 if: interior space and comfort are your top priorities, and you're willing to invest time mastering a complex setup. Its roomier floor plan and excellent headroom reward patient users, but the frustrating pitch process, weaker bug protection, and heavier weight are significant tradeoffs.

Verdict: For most ultralight backpackers, the Big Agnes Copper Spur Tent is the stronger all-around choice. The Arc Dome 2's comfort advantage isn't worth its setup complexity and protection compromises unless you specifically need maximum interior volume and rarely face buggy or rapidly changing conditions.

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