Big Agnes Copper Spur UL2 Backpacking Tent Review
Updated:
Feb 28, 2026The Big Agnes Copper Spur UL2 ($600) is one of the most livable freestanding tents on the market in 2026, offering standout interior organization, easy setup, and solid weather protection at just 3 pounds. It’s a premium option for backpackers who want comfort without the hassle of trekking pole setups or cramped quarters. While the thin materials require a gentle hand and the price is steep, the overall balance of weight, space, and features is hard to beat.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
Design Type
Freestanding
Packaged weight
3 lb.
Floor Area
29 sq. ft.
Floor dimensions
88 x 52/42 in.
Peak height
40 in.
Floor Fabric
15D x 20D nylon
Capacities
1, 2, 2XL, 3, 3XL, 4, 5P
Pros
Cons
Big Agnes Copper Spur UL2
For this season's top models, see our guide to the Best Backpacking Tents.
The Big Agnes Copper Spur UL2 offers impressive interior space for a lightweight backpacking tent, but it still makes some compromises to keep weight down. Most notably, it features a tapered floor plan—52 inches wide at the head, narrowing to 42 inches at the foot. The 88-inch length gave me a little extra room at both my head and feet, but the width was a different story. The tent is technically sized for two regular mummy pads (or two 20-inch rectangular pads in a pinch), but on a recent trip to Havasupai, we pushed it by using a wide-long Big Agnes Zoom UL (25 x 78 in.) and a Sea to Summit Ether Light XT (25 x 72 in.). Together, they maxed out the floor so completely that the fabric stayed under constant tension, making the door zippers tough to operate. In hindsight, we should’ve gone with the Copper Spur UL2 Long, which extends the length to 96 inches and offers a consistent 54-inch rectangular width. That layout would’ve handled our specific pad setup far more gracefully.
That said, the Copper Spur still stands out for its headroom. The steep sidewalls and ridge pole create genuinely usable vertical space, especially near the head end. Compared to semi-freestanding tents like the Big Agnes Tiger Wall, which taper more aggressively, the UL2 feels noticeably more livable. Used solo, it’s fantastic—I could sit up, change layers, and sort gear without brushing the ceiling.
With both my partner and me inside, though, it felt tight. We had to angle our shoulders to avoid the sloped walls, and sitting up at the same time was a squeeze. The height is excellent for one, but gets snug for two, especially when you’re both trying to decompress after a long day.
All told, the Big Agnes Copper Spur UL2 is about as roomy as lightweight tents come. However, if interior space is a top priority, it’s worth considering one of the larger models: the UL2 XL for more width, or the UL3 and beyond for true two-person comfort.
The Big Agnes Copper Spur UL2 is one of the lightest and most packable freestanding backpacking tents on the market. With a packaged weight of just 3 pounds, it’s a compelling option for all but the most ounce-counting backpackers. Big Agnes walks a fine line between performance and weight here, and the result is genuinely impressive. You’d be hard-pressed to find a better balance of interior space, weather protection, and durability at this weight. In my opinion, the Copper Spur UL2 stands as one of the most well-rounded lightweight tents available today.
That said, there are roomier and more rugged alternatives if you’re willing to carry a bit more. The Nemo Dagger Osmo 2P (3 lb. 15 oz.) offers a wider rectangular floor plan (50 inches throughout), steeper walls, and more durable fabrics that better suit my long-haul backpacking trips. On the other end of the spectrum, you can opt for an even lighter model, such as the semi-freestanding Big Agnes Tiger Wall UL2 (2 lb. 8 oz.), but that tent comes with real compromises. You get noticeably less interior space, a more challenging setup on rock or loose soil, and a single-pole structure that can feel unstable in strong winds.
Packed size is another win for the Copper Spur. The tent compresses to 19.5 inches long by 4 inches in diameter, which makes it easy to slide into my pack or strap to the side. I also appreciated Big Agnes’ redesigned stuff sack—its wide, lengthwise opening and integrated compression straps made packing up quick and frustration-free. On our Havasupai trip, that small design detail saved time during rushed early mornings and made stowing the tent far easier than expected.
Is the Big Agnes Copper Spur UL2 "Ultralight"?
First and foremost, there is no standardized definition of “ultralight tent”, but not surprisingly, there are plenty of opinions out there. Perhaps the most commonly referenced definition of ultralight is 3 pounds or less for a 2-person model, and 2 pounds or less for a solo tent. Another concept of “2 pounds or less per person” makes less sense to us, as it would make any 2-person tent that weighs 4 pounds or less, or any 3-person tent that weighs 6 pounds or less, ultralight. We reject that.
Using the 3 pounds or less concept for a 2-person tent, the Big Agnes Copper Spur UL2 is right on the border. Its packaged weight is 3 pounds even, and its minimum trail weight is 2 pounds 10 ounces (for more on this topic, see our deep dive on packaged weight vs. minimum weight). If we had to take a stance, given how far ultralight tent technology has come in recent years, including within Big Agnes’ own lineup (the Tiger Wall UL2 at 2 lb. 8 oz., and the Fly Creek UL2 at 2 lb. 4 oz.), we lean toward calling the Copper Spur UL2 an impressive and luxurious “lightweight” backpacking tent. It’s a close call, and it’s not wrong to call the Copper Spur “ultralight” (Big Agnes labels it that way), but we think the bar has been raised—or lowered, to be more accurate.
The Big Agnes Copper Spur UL2 offers solid protection for most three-season conditions, but its lightweight build comes with a few compromises. During a windy trip to Havasupai, we saw the tent pushed to its limits. I appreciated the full-coverage rainfly and solid fabric panels along the lower tent body, which helped keep dust out—something that’s often a problem with more mesh-heavy designs like the Big Agnes Tiger Wall. The rainfly is made with Big Agnes’ proprietary HyperBead fabric, which is designed to be stronger and resist stretching when wet.
Still, the tent feels noticeably more delicate than others I’ve used, both in materials and overall structure. One of the more surprising issues was the top ridge pole twisting and partially collapsing under the weight of items stored in the overhead gear bin pocket. We had to offload gear to keep the pole from folding in—something I’ve never encountered with a backpacking tent. On another night, despite being fully staked out, a strong gust lifted the tent and blew it into a bush, resulting in a few small tears in the fabric. In calm or moderate conditions, the Copper Spur holds up well, but in high winds or exposed terrain, I’d feel more confident in a sturdier tent like the Nemo Dagger Osmo 2P.
The Big Agnes Copper Spur UL2 achieves its low weight by using thin materials, although it’s a slight step up in durability compared to the most minimalist ultralight tents. It uses a 15-denier nylon rainfly, a 20-denier floor, and a mix of 15D and 20D fabrics in the tent body. That’s significantly lighter than more robust tents like the REI Co-op Trail Hut 2 (with its 75D floor), but marginally more durable than the Big Agnes Tiger Wall, which uses 15D fabrics throughout and features more mesh in the tent body. The Copper Spur also uses 8.7-millimeter DAC NFL poles, which feel sturdier than the Tiger Wall’s slimmer DAC Featherlite NFL setup.
For careful backpackers, the Copper Spur strikes a workable balance between weight and durability. But personally, I found it too fragile for the price. On our Havasupai trip, a single gust of wind blew the tent into a bush, and I found multiple small holes in the rainfly where it had scraped against debris. The floor fabric also felt worryingly delicate, and I’d strongly consider using a footprint to help protect against punctures from rocks and sticks (Big Agnes sells one separately). While the zippers and hardware performed without issue, I had ongoing concerns about the pole structure. One pole consistently twisted under tension, partially collapsing the foot end and leaving the tent feeling unstable in anything more than mild weather.
All told, if you are willing to baby your gear in exchange for the low weight, the Big Agnes Copper Spur UL2 can work well. But if long-term durability or confidence in rougher conditions are a priority, it might be worth considering sturdier (and often more affordable) alternatives.
The Copper Spur’s setup is quick and intuitive, and Big Agnes’ attention to detail made the components a joy to operate. The redesigned stuff sack features a built-in stake pocket, keeping everything organized and making it easier to unpack and repack at camp. Once I laid everything out, it took me about 3 to 5 minutes to fully pitch the tent, and I had no trouble doing it solo. The pole structure is simple: just connect the poles, insert them into the four corner grommets, clip the tent body to the poles, and secure it with stakes. Attaching the rainfly and staking out the vestibules felt just as straightforward. Nothing about the setup felt confusing or over-designed—it follows the familiar freestanding tent layout and doesn’t require instructions.
The Copper Spur stands out in its weight class thanks to its fully freestanding design, which gives it a notable edge in ease of use over semi-freestanding backpacking tents like the Nemo Hornet or Big Agnes Tiger Wall, and trekking-pole shelters like the Hyperlite Unbound 2P. Unlike those models, the Copper Spur holds its structure without needing to be staked out, making it much easier to pitch on tricky surfaces like granite slabs or sand. It’s also easier to reposition once set up—handy if you need to shift into the shade or adjust your site—and generally requires less fiddling to get a clean, taut pitch.
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Longevity
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PFAS-Free DWR
Durable water-repellent (DWR) finishes can contain PFAS (per- and polyfluoroalkyl substances). These highly persistent “forever chemicals” are used in outdoor gear for their strong resistance to water, oil, and heat, but are linked to environmental contamination and a range of health concerns. A green check mark indicates the product uses a PFAS-free DWR, while a red X means the DWR contains PFAS.
Recycled Materials
Recycled materials are prevalent in outdoor gear, with nylon, polyester, wool, and down among the most common, but the composition varies widely. A green check mark indicates the product is made with a substantial amount of recycled materials (100% recycled or the core fabric that makes up most of the product is recycled), a yellow check means it contains a moderate to small amount of recycled materials, while a red X means there are no recycled materials in the product.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile management system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A green check mark indicates a product is either a Bluesign Product (contains at least 90% Bluesign-approved fabrics and 20-30% Bluesign-approved accessories) or features a significant amount of Bluesign-approved materials. A yellow check mark means it uses some Bluesign-approved materials but less than the aforementioned category, and a red X means there are no Bluesign-approved materials in the product.
Solution-Dyed Materials
Solution dyeing adds pigment to synthetic fibers during production rather than afterward, reducing water use, energy consumption, greenhouse gas emissions, and chemical waste, while also creating fabrics that resist fading better over time. A green check mark indicates a product features a substantial amount of solution-dyed materials, a yellow check mark indicates moderate or limited use of solution-dyed fabrics, and a red X indicates there are no solution-dyed materials in the product.
Responsible Manufacturing
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Recycled and/or Reduced Packaging
Packaging can add significant waste to outdoor gear purchases, so many brands work to reduce its impact by using recycled materials, incorporating Forest Stewardship Council-certified paper products, and minimizing plastic and paper use. A green check mark indicates a brand uses recycled or reduced materials across all of its packaging, a yellow check indicates moderate or limited use of recycled or reduced packaging, and a red X indicates the brand does not make either of these efforts.
Repair Services
Repair services extend the lifespan of outdoor gear and reduce overall consumption, though programs vary widely. Some brands offer comprehensive repairs for a range of issues, while others provide limited or no repair support. A green check mark indicates a robust repair program, a yellow check mark indicates limited repair services, and a red X indicates the brand does not offer repair services.
Resale and/or Recycling Services
Resale and recycling programs help keep outdoor gear in circulation longer and out of landfills, ranging from trade-in resale platforms that offer store credit to take-back initiatives that recycle products at the end of their usable life. A green check mark indicates a brand offers both resale and recycling programs, a yellow check mark indicates it offers one or the two, and a red X indicates it offers neither.
Carbon Footprint Tracking
This criterion evaluates whether a brand measures, reports, and works to reduce its greenhouse gas emissions using established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. A green check mark indicates a brand publicly reports greenhouse gas emissions data, sets clearly defined reduction targets, and uses established tracking frameworks such as Higg or The Change Climate Project. A yellow check mark indicates the brand tracks emissions and outlines reduction goals but provides limited data, lacks science-based verification, or does not clearly report progress. A red X indicates the brand does not appear to track greenhouse gas emissions or provides so little information that its efforts cannot be verified.
Annual Impact Report
Annual impact reports provide transparency and accountability by outlining a brand’s sustainability efforts across areas such as material sourcing, greenhouse gas emissions, waste, water use, supply chains, and packaging. A green check mark indicates a brand publishes a detailed, brand-specific impact report that closely aligns with our sustainability criteria and leaves little room for ambiguity. A yellow check indicates a brand provides some relevant sustainability reporting but lacks detail in key areas or is covered only briefly within a parent company report. A red X indicates a brand does not regularly publish an impact report.
The Copper Spur's ventilation is decent but not ideal in hot climates. The fly features two vents, and the double-wall design helps prevent condensation. However, the tent’s solid lower panels limit airflow near the floor. While napping during the heat of the day—at around 80°F—we found ourselves baking inside. Even with vents open, airflow was minimal. That said, we didn’t experience any condensation overnight, likely thanks to the dry desert air. In more humid environments, you’ll want to be more intentional about venting, especially if you’re sharing the tent.
Interior Storage
Big Agnes consistently nails the small details, and the Copper Spur UL2 is no exception—especially when it comes to pockets and interior organization. This tent has more storage and better pocket design than any I’ve used. There are four in total: two spacious 3D overhead bin pockets at the head and foot (about six inches deep and nearly the full width of the tent), which I used for stashing layers, stuff sacks, electronics, and toiletries. The two smaller pockets near the floor at the head were perfect for my phone and other small items I wanted to reach in the middle of the night.
Vestibules
The Big Agnes Copper Spur UL2 features a standard two-door, two-vestibule layout. Each vestibule offers about 9 square feet of space—plenty of room to store boots and backpacking packs without feeling cramped. While they’re slightly smaller than those on tents like the Nemo Dagger Osmo 2P (12.1 sq. ft.), I had no trouble keeping gear dry and neatly tucked away. I also appreciated the option to pitch the vestibule doors awning-style using trekking poles or the included guylines—a nice touch for added ventilation or shade on warmer days.
Nemo Dagger Osmo 2P ($600): More Room, Slightly More Weight
The Dagger Osmo 2P is a great choice if you’re willing to carry a few extra ounces for a bit more interior space and durability. While it weighs nearly a pound more than the Copper Spur UL2 (3 lb. 15 oz. vs. 3 lb.), it offers a roomier, more symmetrical floor plan with 50 inches of width throughout—no taper—making it easier to fit two wide pads without overlap. The vestibules are also more generous at 12.1 square feet each, which adds real value if you need to store gear, bring along a dog, or camp with a child. The peak height is slightly taller too, and the tent feels more stable in wind, with beefier fabrics that offer a bump in long-term durability. While it’s not as light, the Dagger may be the better pick for backpackers who prioritize space, comfort, and a more forgiving layout over shaving ounces. For more, read our review of the Nemo Dagger Osmo 2P.
Big Agnes Tiger Wall UL2 ($500): Lighter, Less User-Friendly
If you want to lower your base weight further and don’t mind giving up some roominess, the Tiger Wall is another tent from Big Agnes with a rich pedigree. It’s a semi-freestanding shelter, meaning you’ll have to take the time to stake out its foot end to maximize space. When that space is maxed, there’s less of it: With a square foot less of floor area, an inch lower peak height, and a canopy that slopes dramatically downward at the foot, the Tiger Wall is a squeeze for two sleepers on full-sized pads. However, one Better Trail editor loves using it as a one-person palace. The tent weighs only 2.5 pounds, making it light enough for moderate solo backpacking. The Tiger Wall does have a durability drawback, though, with a tent body and floor that are even thinner than the Copper Spur’s. For more, read our Big Agnes Tiger Wall 2P review.
Our favorite do-it-all backpacking tent, the Copper Spur offers exceptional livability and weatherproofing for a minimal weight and packed size. Yes, its price is hard to swallow, but this tent won’t let you down.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
The Nemo Dagger is made for hikers who want to max out backcountry comfort. The tent doesn’t levy too harsh of a weight tax, considering the room it provides, and it’s a well-constructed model. Its high price tag would fit better on a lighter design, though.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
The popular semi-freestanding Tiger Wall is superlight and a decent value. We found the 2-person design is feathery enough for solo hiking, which might be its best use case: It’s a tight fit for two sleepers. We’d also rate the tent even higher if it were more durable.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
Is the Big Agnes Copper Spur for You?
The Big Agnes Copper Spur UL2 is a great fit if you’re a weight-conscious backpacker who still wants the comfort, convenience, and stability of a fully freestanding tent. It strikes an impressive balance for a backpacking tent: light enough for high-mileage days, but still roomy enough to sit up, move around, and keep your gear organized. What’s more, its freestanding design is easy to pitch and relatively stable in high winds, while the solid nylon panels around the lower canopy offer better protection from wind and rain than many mesh-heavy ultralight tents. And despite the low weight, it doesn’t skimp on features—there are two doors, usable vestibules, and best-in-class interior storage. If you care about weight and livability, the Copper Spur UL2 hits a sweet spot. Just be prepared for the investment and be willing to treat it with care.
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