NEMO Equipment Dagger OSMO Lightweight Backpacking Tent vs Big Agnes Copper Spur UL2

Editorial Team
Last modified at April 30, 2026
When it comes to backpacking, having a reliable and comfortable tent is crucial. The NEMO Equipment Dagger OSMO and Big Agnes Copper Spur UL2 are both popular choices among outdoor enthusiasts. This comparison will help you understand the strengths and weaknesses of each tent, ensuring you make an informed decision for your next adventure.

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NEMO Equipment Dagger OSMO Lightweight Backpacking TentBig Agnes Copper Spur UL2
NEMO Equipment Dagger OSMO Lightweight Backpacking TentBig Agnes Copper Spur UL2
Weight

3 lb 5 oz

Trail Weight: 2 lb 10 oz
Total Weight: 3 lb

Floor Area

30.6 sq ft

29 sq ft

Peak Height

43 in

N/A

Pack Size

20 × 6.5 × 3.5 in

19.5 × 4 in

Number Of Doors

2

2

Warranty

NEMO Adventure Forever Guarantee™

N/A

Number Of Vestibules

2

2

Pole Structure

DIAPOLE™ premium anodized aluminum

N/A

Waterproof Rating

Rainfly: 1500 mm
Floor: 2000 mm

N/A

Vestibule Area

12.1 sq ft + 12.1 sq ft

9 sq ft + 9 sq ft

Setup Time

N/A

N/A

Height

N/A

N/A

Headroom

N/A

40 in

Durability

NEMO Equipment Dagger OSMO Lightweight Backpacking Tent

2.6/ 5.0

Big Agnes Copper Spur UL2

4.4/ 5.0

Durability is essential for backpacking tents as it ensures your shelter can withstand various weather conditions and rough handling. A more durable tent means fewer worries about wear and tear over time, providing long-term reliability. The Big Agnes Copper Spur UL2 excels in this category with its ripstop nylon and reinforcement layer, making it tough enough to handle years of use. In contrast, the NEMO Equipment Dagger OSMO has some concerns about pole durability and stake sturdiness, which may affect its long-term resilience in harsh conditions.

Comfort

NEMO Equipment Dagger OSMO Lightweight Backpacking Tent

4.8/ 5.0

Big Agnes Copper Spur UL2

4.6/ 5.0

Comfort is key for a pleasant backpacking experience, as it affects how well you rest and recharge. A more comfortable tent offers better livability, space, and features that make your stay enjoyable. The NEMO Equipment Dagger OSMO stands out with its roomy interior and thoughtful features like mesh pockets and a Night Light Pocket, making it exceptionally livable for two people. While the Big Agnes Copper Spur UL2 also offers a spacious interior, the Dagger OSMO's additional features give it a slight edge.

Weather Protection

NEMO Equipment Dagger OSMO Lightweight Backpacking Tent

3.4/ 5.0

Big Agnes Copper Spur UL2

4.6/ 5.0

Weather protection is vital for staying dry and comfortable in various conditions. A tent with better weather protection ensures you and your gear stay dry during rain and wind. The Big Agnes Copper Spur UL2 shines in this category with its excellent rainfly and waterproof construction, keeping you and your gear dry in wet conditions. The NEMO Equipment Dagger OSMO provides reliable protection in moderate rain and wind, but its performance may vary in extreme storms.

Ventilation

NEMO Equipment Dagger OSMO Lightweight Backpacking Tent

4.4/ 5.0

Big Agnes Copper Spur UL2

4.1/ 5.0

Good ventilation helps reduce condensation and keeps the interior comfortable, especially in warm weather. A tent with better ventilation ensures a more pleasant and breathable environment. The NEMO Equipment Dagger OSMO offers excellent airflow from mesh panels and adjustable vents, reducing condensation and keeping the interior comfortable. The Big Agnes Copper Spur UL2 also has good ventilation with mesh windows and vents, but it may have minor issues with moisture.

Ease Of Use

NEMO Equipment Dagger OSMO Lightweight Backpacking Tent

3.9/ 5.0

Big Agnes Copper Spur UL2

4.8/ 5.0

Ease of use is important for quick and hassle-free setup, especially after a long day on the trail. A tent that is easier to set up saves time and effort, making your camping experience more enjoyable. The Big Agnes Copper Spur UL2 excels with its freestanding design and color-coded webbing, making setup quick and effortless. The NEMO Equipment Dagger OSMO also has an intuitive setup with color-coded clips, but it may have minor challenges with door alignment.

Packability

NEMO Equipment Dagger OSMO Lightweight Backpacking Tent

4.6/ 5.0

Big Agnes Copper Spur UL2

4.8/ 5.0

Packability is crucial for backpackers who need to save space and weight in their packs. A more packable tent is easier to carry and transport, making your journey more comfortable. The Big Agnes Copper Spur UL2 is lightweight and compact, packing down small for easy transport. The NEMO Equipment Dagger OSMO is also lightweight and compact, but the Copper Spur UL2's slightly better pack size gives it an edge.

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Conclusion & Final Verdict:

After comparing the NEMO Equipment Dagger OSMO and Big Agnes Copper Spur UL2, it's clear that both tents have their strengths. The Big Agnes Copper Spur UL2 stands out for its durability, weather protection, ease of use, and packability, making it a great all-around choice for backpackers. However, the NEMO Equipment Dagger OSMO offers better comfort, ventilation, and some additional features that may appeal to those looking for a more livable space.

Choose the Big Agnes Copper Spur UL2 if you prioritize durability and ease of setup. Opt for the NEMO Equipment Dagger OSMO if you value comfort and ventilation more highly. Both tents are excellent choices, so your final decision should depend on your specific needs and preferences.

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