Big Agnes Copper Spur vs Nemo Dagger: Choosing Your Backpacking Shelter

The Big Agnes Copper Spur and Nemo Dagger are both top-tier backpacking tents, but they cater to different priorities. In this review, we explain how they compare.

Quick Takeaway

• The Big Agnes Copper Spur is very lightweight, a major plus for backpackers. If minimizing pack weight is your top priority, the Copper Spur is a solid pick.
• Nemo Dagger has a more spacious design and superior weather protection. OSMO fabric is Nemo’s proprietary blend that’s supposed to be more water-resistant, more durable (abrasion resistant), and stretch less than traditional nylon tent fabrics, especially in humid conditions.

Quick Comparison:

Big Agnes Copper Spur vs Nemo Dagger Head-to-Head Comparison

Weight & Packability

Packed Size: Both tents pack down to a similar size, with the Copper Spur having a slight edge in compactness. The cylindrical stuff sack design of both models allows for easy packing and efficient use of space in your backpack.

• Big Agnes Copper Spur HV UL2: 2 lbs. 11 oz.
• NEMO Dagger OSMO 2P: 3 lbs. 6 oz.

Trail Weight: The Copper Spur takes the lead here, shaving off nearly a pound in trail weight compared to the Nemo Dagger.

• Copper Spur HV UL2: 6 x 19.5 inches
• Dagger OSMO 2P: 19.5 x 6.5 x 3.5 inches

Vertical Wall Height Comparison

• Big Agnes Copper Spur HV UL2: With a peak height of 56 inches, the Copper Spur has 8 extra inches of headspace, with pre-bent poles that create steep walls, maximizing vertical space.
• Nemo Dagger OSMO 2P: The Dagger has a peak height of 48 inches.

Vestibule Space Analysis

• Copper Spur HV UL2: Offers two vestibules, each providing about 9 square feet of space.
• Nemo Dagger OSMO 2P: Also features two vestibules, but they are slightly larger at about 9.5 and 8.5 square feet respectively.

Storage Solutions: Pockets vs. Divvy Sack System

• Copper Spur HV UL2: Comes equipped with multiple storage options, including 10 mesh pockets and a ceiling gear loft.
• Nemo Dagger OSMO 2P: Features a Divvy sack system that divides the tent’s internal space into two compartments.

Weather Performance

Big Agnes Copper Spur:

• Weather Resistance: The Copper Spur uses lightweight nylon fabric with a Durable Water Repellent (DWR) coating. It generally performs well in moderate rain and wind.
• Strengths:
  • Good balance of lightweight materials and weather protection.
  • Well-designed structure and guy points help with stability in wind.  
  • Bathtub floor design helps prevent water from entering the tent.  
• Weaknesses:
  • Lighter fabrics can be more susceptible to abrasion and potential damage in very harsh conditions.  
  • Some users have noted that the floor can be a bit thin, requiring extra care or a footprint for added protection.

Nemo Dagger OSMO 2P:

• Weather Resistance: The Dagger OSMO uses Nemo’s proprietary OSMO fabric, which is designed to be more water-resistant, durable, and stretch less than traditional nylon, especially in humid conditions.  
• Strengths:
  • OSMO fabric offers potentially superior water resistance and reduced stretch compared to the Copper Spur’s nylon.  
  • Generally robust construction adds to its ability to handle challenging weather.
  • Well-designed vestibules provide good protection for gear.
• Weaknesses:
  • While OSMO is designed to be more durable, it’s still a lightweight fabric, and long-term durability in extreme conditions is always a consideration.
  • The Dagger is slightly heavier than the Copper Spur, which might be a trade-off for some users.

Here’s a table summarizing the key differences:

Which is better for weather?

• In general, the Nemo Dagger OSMO 2P likely has an edge in weather performance due to the OSMO fabric and its robust construction. This could be particularly noticeable in wet or humid conditions where the Copper Spur’s nylon might stretch and become less water-resistant over time.

Sustainability

Both tents use DAC aluminum poles (recyclable), but Nemo edges ahead with fully recycled floors and repair programs while Big Agnes leads in water conservation through dye technology.

• Copper Spur
  • Uses solution-dyed fabric (68% less water, 90% fewer chemicals)
  • Partners with The 1% for the Planet for environmental initiatives
  • Recyclable packaging since 2019
• Nemo Dagger
  • 100% recycled polyethylene floor material
  • Bluesign-approved fabric manufacturing process
  • Tent Revival Program repairs old gear (30% lower emissions than new production)

When to Choose the Big Agnes Copper Spur

Thru-hiking

The Big Agnes Copper Spur HV UL2 is an excellent choice for long-distance trails like the Pacific Crest Trail (PCT) or John Muir Trail (JMT). Here’s why:

• Ultralight design: At just 2 lbs 11 oz trail weight, it minimizes fatigue over long distances.
• Quick setup: Freestanding design allows for easy pitching on varied terrain, crucial for thru-hikers covering diverse landscapes.
• Durability: Despite its lightweight construction, it’s built to withstand months of continuous use.

Minimalist Backpacking

For those who count every ounce, the Copper Spur is hard to beat:

• Best-in-class weight-to-space ratio: Offers 29 sq ft of floor space at a fraction of the weight of comparable tents.
• Compact packed size: At 6 x 19.5 inches when packed, it takes up minimal space in your backpack.
• Versatile vestibules: Two 9 sq ft vestibules provide ample gear storage without adding significant weight.

When to Choose the Nemo Dagger

Camping in Rainy Weather

The Nemo Dagger OSMO 2P shines in challenging weather conditions:

• Robust weather protection: OSMO fabric offers superior water resistance and faster dry times.
• Sturdy construction: Pre-bent poles and strategic guy-out points enhance stability in high winds.
• Excellent ventilation: Helps manage condensation during extended periods of wet weather.

People that Need Extra Storage

For duo adventurers who value organization, the Dagger offers:

• Generous interior: With 31.3 sq ft of floor space, it provides more room for two people to spread out.
• Divvy sack system: Innovative dual-stage stuff sack doubles as an internal gear divider, perfect for separating personal items.
• Spacious vestibules: Slightly larger than the Copper Spur’s, offering 9.5 + 8.5 sq ft for gear storage.

Is the Big Agnes Copper Spur tent worth the extra cost?

The Big Agnes Copper Spur is a popular ultralight backpacking tent known for its spaciousness, easy setup, and high-quality materials. However, it’s also a premium-priced tent. Whether it’s worth the extra cost depends on your individual needs and priorities.

Factors to consider:

• Weight: The Copper Spur is very lightweight, a major plus for backpackers. If minimizing pack weight is your top priority, the Copper Spur’s price might be justified.
• Space: It offers generous headroom and interior space. If you prioritize comfort and have the budget, this is a strong point.
• Durability: While well-made, some users find the floor a bit thin. Consider the terrain you’ll be camping on. A footprint might be necessary, adding to the cost.
• Features: The Copper Spur has convenient features like multiple pockets and easy setup. Assess if these features are essential for your needs.
• Budget: The Copper Spur is expensive. If you’re on a tight budget, there are excellent, less costly alternatives.

Alternatives to the Big Agnes Copper Spur:

• REI Co-op Quarter Dome SL: Lighter and less expensive.
• MSR Hubba Hubba NX: Balances weight, space, and durability at a lower price.
• Nemo Hornet: Another lightweight option with a different pole structure.

Is the Nemo Dagger OSMO 2P worth the cost?

The Nemo Dagger OSMO 2P is a popular tent, but whether it’s “worth it” depends entirely on your needs and priorities. It’s definitely in a higher price bracket, so let’s break down what you’re paying for and if it aligns with what you need in a tent.

Factors to consider:

• OSMO Fabric: This is the key differentiator. OSMO fabric is Nemo’s proprietary blend that’s supposed to be more water-resistant, more durable (abrasion resistant), and stretch less than traditional nylon tent fabrics, especially in humid conditions. If you camp in wet or humid environments, or are hard on your gear, this could be a big plus.  
• Durability: Beyond the OSMO fabric, the Dagger is generally known for its robust construction. If you want a tent that will last many seasons, this is a good contender.  
• Space and Comfort: Nemo tents are known for their livable interiors. The Dagger offers good headroom and floor space for two people, plus well-designed vestibules for gear storage. If comfort is a high priority, this is a strong point.  
• Features: Nemo often includes thoughtful features, and the Dagger is no exception. Look for things like integrated light pockets, gear lofts, and easy-to-use pole clips. Consider if these features are important to you.  
• Sustainability: OSMO fabric is PFC-free, and Nemo as a company often emphasizes sustainable practices. If this aligns with your values, it’s a factor to consider.  

Reasons why the Nemo Dagger OSMO 2P might not be worth the extra cost:

• Weight: While not excessively heavy, the Dagger is not the lightest tent in its class. If ultralight is your absolute top priority, you might find lighter (and cheaper) options.
• Price: It’s a premium tent with a premium price tag. If you’re on a tight budget, there are plenty of excellent tents for less.
• Diminishing Returns: The benefits of OSMO fabric, while real, might not be significant enough for everyone to justify the extra cost. If you mostly camp in dry conditions, or are careful with your gear, you might not see a huge return on the investment.

Alternatives to the Nemo Dagger OSMO 2P:

• Big Agnes Copper Spur HV UL2: Lighter, often slightly less expensive, but without the OSMO fabric.
• REI Co-op Quarter Dome SL 2: A good balance of weight and price, though again, no OSMO fabric.
• MSR Hubba Hubba NX: A classic, reliable option, usually more affordable.

Related Topics:

Final Verdict

• Best for weight-conscious: Copper Spur
• Best for storm readiness: Dagger

Choose the Copper Spur if you’re going on long-distance hikes or if minimizing pack weight is your top priority. The ultralight design and quick setup make it ideal for covering serious miles.

Opt for the Dagger if you’re camping in unpredictable weather or if you and your partner value organized, separate storage spaces. The thoughtful design make it a comfortable, reliable shelter in challenging conditions.