SlingFin Cinder Cone Review: The Ultimate Pyramid Tarp for Extreme Conditions? (2025)

Ever found yourself cursing the flimsy tent that couldn’t handle a gust of wind, let alone a full-blown storm? Well, the SlingFin Cinder Cone Pyramid Tent might just be the game-changer you’ve been waiting for. After putting it to the test in some of the harshest conditions—from the windswept shores of Patagonia to the soggy tundra of Alaska—I’m convinced this tarp-style shelter stands head and shoulders above the rest. But here’s where it gets controversial: while it’s not a one-size-fits-all solution, it does so many things exceptionally well that it’s hard to ignore its versatility. Let’s dive in.

A few years back, during the pandemic-induced DIY craze, I decided to modify my old pyramid tarp shelter. I added adjustable tensioners and mid-panel tie-outs to better handle strong winds. It was a messy, sanity-testing process, but the end result was functional—though far from perfect. Little did I know, SlingFin was about to release the Cinder Cone, a shelter that not only incorporated all my modifications but took them to the next level. And this is the part most people miss: it’s not just about the features; it’s how they’re executed that makes this tent a standout.

I’ve used the Cinder Cone in Patagonia as a basecamp shelter, on bikepacking trips across islands, and on a grueling packrafting expedition above the Arctic Circle. Each time, its adaptability and durability left me impressed. In short, this might be the best pyramid shelter I’ve ever used. It’s spacious, ventilates like a dream, and laughs in the face of storms that would flatten lesser tents. Sure, it’s not perfect—no hang loop on the exterior? Really?—but its strengths far outweigh its minor flaws.

Weather Resistance: 8.0
Living Space: 9.0
Durability: 8.0
Size & Weight: 9.0

Key Specs:
- Type: Basecamp and expeditions
- Weight: 2 lbs., 7.4 oz.
- Doors: 1
- Sleeps: 4
- Floor Area: 81 sq. ft.
- Height: 72"
- Walls: Single or double

What Makes It Stand Out:
- Super-versatile setup options for any terrain
- Multiple ventilation ports to keep things breathable
- Rugged construction with nylon 66 and ALUULA Durlyte
- Packs down to a surprisingly small size

Room for Improvement:
- Requires seam sealing (a small but necessary task)
- No hang loop on the exterior (a head-scratching omission)

Pyramid tarps are already some of the most versatile shelters out there, but SlingFin has taken the concept and refined it to near-perfection. The Cinder Cone is designed for four-season use, making it a favorite among mountaineers, thru-hikers, bikepackers, and paddlers alike. Its 10D sil-nylon 66 body keeps weight down, while the ALUULA Durlyte top cap adds durability where it matters most. This isn’t just a tent; it’s a well-thought-out piece of engineering.

Setting it up is a breeze, even in challenging terrain. After an 18-hour day in Alaska, I was able to throw it down on uneven tundra and have it ready in minutes. SlingFin doesn’t include a pole, but that’s actually a plus—you can use trekking poles, a kayak paddle, or even a sturdy stick. For bikepackers, they offer a collapsible carbon pole that’s worth the investment.

The ventilation system is where the Cinder Cone truly shines. Unlike other pyramid shelters that turn into saunas on sunny days, this one features high-set portals that can be adjusted to let in just the right amount of air. During a 50 mph windstorm in Patagonia, these vents provided enough pressure relief to keep the tent stable—and us sane.

But it’s not without its quirks. On a particularly wet night in Alaska, I noticed some minor leaking at the seams under tension. A quick fix with seam sealant solved the issue, but it’s something to keep in mind. The materials, while durable, aren’t indestructible—I managed to tear the floor during one trip, though it was easily repaired with Tenacious Tape. And that missing hang loop? It’s a small detail, but one that could make a big difference in certain situations.

The Big Question: Is It Worth It?
At $435 (without the mesh inner), the Cinder Cone is a steal compared to competitors like the Hyperlite Mountain Gear Ultamid 4, which costs nearly double. It’s lighter, more compact, and better ventilated than the Black Diamond Mega Snow, and more widely available than cottage industry options like the Mountain Laurel Designs Supermid. While it’s not a quiver-killer, it’s replaced my old modified tarp entirely—no sewing required.

This winter, I’m planning to use it for ski overnight trips in the North Cascades. Its compact packed size and roomy interior make it ideal for digging into the snow, creating a cozy shelter no matter how harsh the conditions. So, is the SlingFin Cinder Cone the ultimate pyramid tent? Not quite, but it’s damn close. And that’s a bold statement in a market filled with tough competition.

Final Thought: If you’re in the market for a versatile, durable shelter that can handle almost anything you throw at it, the Cinder Cone is hard to beat. But here’s the real question: would you sacrifice a few minor conveniences for a tent that excels in nearly every other way? Let me know in the comments—I’m curious to hear your thoughts.

SlingFin Cinder Cone Review: The Ultimate Pyramid Tarp for Extreme Conditions? (2025)
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