Big Agnes Copper Spur UL2 vs NEMO Dragonfly OSMO Ultralight Backpacking Tent

Editorial Team
Last modified at May 17, 2026
When it comes to ultralight backpacking tents, the Big Agnes Copper Spur UL2 and the NEMO Dragonfly OSMO Ultralight Backpacking Tent are two of the most popular choices. Both tents offer exceptional lightweight designs, making them ideal for long-distance backpacking trips. However, they have distinct differences that cater to different needs and preferences.

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Big Agnes Copper Spur UL2NEMO Dragonfly OSMO Ultralight Backpacking Tent
Big Agnes Copper Spur UL2Dragonfly OSMO Ultralight Backpacking Tent
Weight

2.82 lb

2 lb 12 oz

Floor Area

29 sq ft

20.5 sq ft

Number Of Doors

2

1

Material

ultralight nylon double rip-stop fabric

OSMO™ poly-nylon ripstop fabric, Polyester/ No-see-um mesh

Stakes

eight 6 in. Dirt Dagger™ UL stakes

Included

Warranty

limited warranty against manufacturing or material defects

Adventure Forever Guarantee™

Vestibule Size

9 + 9 sq ft

8.6 sq ft

Pole System

DAC Featherlite NFL, NSL and pressfit poles

Hubbed, pre-bent DIAPOLE™ recycled aluminum poles with Precurve™ cross pole

Packed Dimensions

19.5 × 4 in

19.0 × 5.5 × 3.0 in

Number Of Vestibules

2

1

Headroom

40 in

40 in

Fabric Type

Proprietary HyperBead™ fabric; 15D nylon with 20D solution dyed ripstop

OSMO™ Ripstop (59.1 in) for rainfly and floor, Polyester/ No-see-um mesh for canopy

Zipper Placement

dual zippers

N/A

Durability

Big Agnes Copper Spur UL2

4.4/ 5.0

Dragonfly OSMO Ultralight Backpacking Tent

4.2/ 5.0

Durability is crucial for backpacking tents as it ensures the tent can withstand various weather conditions and rough handling during outdoor adventures. A more durable tent means fewer worries about tears or damage, providing a reliable shelter in the wilderness. The Big Agnes Copper Spur UL2 excels in durability with its reinforced materials like injection-molded poles and tip-lock buckles, which hold up well in wind and rain. The NEMO Dragonfly OSMO also offers strong durability with its OSMO fabric and silicone coating, providing good water repellency and resistance to wear and tear. However, the Copper Spur UL2's materials and construction give it a slight edge in overall durability.

Comfort

Big Agnes Copper Spur UL2

4.4/ 5.0

Dragonfly OSMO Ultralight Backpacking Tent

4.6/ 5.0

Comfort is essential for a pleasant backpacking experience, as it affects how well you can rest and move around inside the tent. A more comfortable tent can make a significant difference in your overall enjoyment of the trip. The NEMO Dragonfly OSMO offers ample space with dimensions of 88 inches in length and 50 inches in width, providing enough room for two people to sit up and move around comfortably. The Big Agnes Copper Spur UL2 also offers good headroom and storage pockets, but the Dragonfly OSMO's interior height and tapered floor design make it feel more spacious and livable.

Weather Resistance

Big Agnes Copper Spur UL2

4.6/ 5.0

Dragonfly OSMO Ultralight Backpacking Tent

4.6/ 5.0

Weather resistance is vital for staying dry and protected in various outdoor conditions. A tent with better weather resistance ensures you stay comfortable and safe during rain and wind. Both the Big Agnes Copper Spur UL2 and the NEMO Dragonfly OSMO offer excellent weather resistance. The Copper Spur UL2's rain fly with its own pole and waterproof fabric keeps you dry even in heavy downpours, while the Dragonfly OSMO's stormworthiness and 14 stake/guy out points ensure excellent protection against rain and wind. Both tents perform well in this category, making it a tie.

Ventilation

Big Agnes Copper Spur UL2

4.2/ 5.0

Dragonfly OSMO Ultralight Backpacking Tent

4.1/ 5.0

Proper ventilation is important to reduce condensation and maintain a comfortable interior climate. Good ventilation helps keep the tent free from moisture and ensures a pleasant sleeping environment. The Big Agnes Copper Spur UL2 features mesh panels and a breathable design that reduce condensation, though some users found airflow slightly limited in humid conditions. The NEMO Dragonfly OSMO offers no-see-um mesh sidewalls and strut vents, providing good airflow but can feel drafty in colder conditions. Both tents offer adequate ventilation, resulting in a tie.

Ease Of Setup

Big Agnes Copper Spur UL2

4.8/ 5.0

Dragonfly OSMO Ultralight Backpacking Tent

4.4/ 5.0

Ease of setup is important for backpackers who want to spend less time pitching their tent and more time enjoying the outdoors. A tent that is quick and easy to set up can be a significant advantage, especially after a long day of hiking. The Big Agnes Copper Spur UL2 is known for its freestanding design and intuitive pole connections, making it one of the quickest tents to pitch. The NEMO Dragonfly OSMO is also easy to set up with color-coded corners and poles, but some users have mentioned that the tight stuff sack can be annoying. Overall, the Copper Spur UL2 is slightly easier to set up.

Weight

Big Agnes Copper Spur UL2

4.7/ 5.0

Dragonfly OSMO Ultralight Backpacking Tent

4.3/ 5.0

Weight is a critical factor for backpackers who need to carry their gear over long distances. A lighter tent can make a significant difference in your overall pack weight, reducing fatigue and making your journey more enjoyable. The Big Agnes Copper Spur UL2 weighs 2.82 pounds, while the NEMO Dragonfly OSMO weighs 2 pounds 12 ounces. Both tents are exceptionally lightweight, but the Dragonfly OSMO is slightly lighter, making it a better choice for those prioritizing weight savings.

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Conclusion & Final Verdict:

Both the Big Agnes Copper Spur UL2 and the NEMO Dragonfly OSMO Ultralight Backpacking Tent are excellent choices for backpackers, but they cater to slightly different needs. If you prioritize durability, ease of setup, and larger vestibules, the Copper Spur UL2 is the better option. On the other hand, if you value comfort, slightly lighter weight, and a comprehensive warranty, the Dragonfly OSMO is the way to go. Ultimately, your choice will depend on your specific preferences and the conditions you plan to encounter on your adventures.

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