Sea to Summit Telos TR2 Backpacking Tent Review
Sea to Summit may be a trusted name in sleeping bags, pads, and stuff sacks, but their tent lineup hasn’t quite earned the same reputation. The Telos TR2 is thoughtfully designed and performs well, but at $449, it doesn’t offer a clear advantage over more established options from brands like Big Agnes or Nemo. Headroom is exceptional, and the tent’s multiple configurations (including the clever “Hangout Mode”) are fun—but they also add complexity and weight. For the price, most backpackers will be better served by a lighter, simpler, and more proven design.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
Design Type
Freestanding
Packaged weight
3 lb. 11 oz.
Floor Area
28 sq. ft.
Floor dimensions
84.5 x 53/43 in.
Peak height
43.5 in.
Floor Fabric
20D nylon
Capacities
2P
Pros
Cons
Sea to Summit Telos TR2
Editor’s note: Sea to Summit updated the Telos line for 2026. The Telos TR2 Evo features a new Ultra-Sil LS fly that dries faster and resists sagging when wet, along with improved peak venting that can be fully sealed in storms. These updates come with a slight weight drop (to 3 lb. 9.3 oz.) and a price increase to $530. For more of this season's top models, see our guide to the Best Backpacking Tents.
The Sea to Summit Telos TR2 has a fairly average-sized floor plan, but where it really shines is in headroom. It measures 84.5 inches long and tapers from 53 inches wide at the head to 43 inches at the feet—comparable to top competitors like the Big Agnes Copper Spur UL2 (88 x 52/42 in.). But what sets the Telos apart is its peak height of 43.5 inches and the unique Tension Ridge pole system, which features a ridge pole that curves upward rather than downward, lifting the ceiling with it. This translates to noticeably more head-and-shoulder room across the interior and higher doors for easier entry and better vestibule storage.
Even though I usually sleep solo in this tent, I really appreciated the livability—it’s roomy enough to sit up, change clothes, and pack up my gear without brushing the walls, which is always a win. The tapered floor plan means you won’t be able to sleep head-to-toe with you hiking partner, but for me, that’s no dealbreaker. Overall, the Sea to Summit Telos TR2 offers excellent vertical space and usability for its size.
At 3 pounds 11 ounces, the Sea to Summit Telos TR2 lands squarely in the “average” weight class for modern backpacking tents. Ultralight alternatives like the Big Agnes Tiger Wall and Nemo Hornet come in over a pound lighter at just 2 pounds 8 ounces, thanks to simpler, semi-freestanding pole structures and thinner materials. The Telos, by comparison, offers the convenience of a freestanding design alongside significantly more headroom. That said, its space-to-weight ratio isn’t exactly best-in-class—the Big Agnes Copper Spur UL2 delivers nearly the same livability while trimming 11 ounces. If interior space is your top priority, it might also be worth looking at the much roomier Copper Spur UL3, which only has a slight weight penalty at 3 pounds 13 ounces.
As for packed size, Sea to Summit’s three-bag storage system felt more gimmicky than game-changing. The idea is to separate the poles, fly, and tent body for better weight distribution and easier sharing between hiking partners. In practice, I found it more annoying than helpful—more bags to keep track of, more pieces to secure to or inside your backpacking pack, and more risk of leaving something behind at camp. Hangout Mode (a unique setup using just the fly and poles as a shade shelter) sounds clever in theory, but I found it difficult to execute solo—and rarely would I want to venture out into the backcountry without the tent body. Ultimately, the Telos packs down reasonably well for its weight, but the extra “features” here don’t offer much payoff.
The Sea to Summit Telos TR2 offers above-average protection for a 3-season tent and is plenty capable for most spring, summer, and fall conditions. It features a full-coverage rainfly with silicone/PU coatings for long-lasting waterproof performance, a bathtub-style floor, and plenty of guy-out points to help stabilize the tent in wind. That said, I do have some concerns about its performance in truly gusty conditions—the tent’s tall ceiling and upward-angled poles (part of its Tension Ridge design) could act like a sail in exposed terrain.
That said, the Telos handled steady rain really well. I’ve spent a few soggy nights tucked inside and have been impressed by how well the tent kept the elements at bay. Moisture beaded up on the rainfly, but since the tent body stayed well separated from the fly, there was never a point where water came through to the inside. During wetter conditions, I did have to be mindful of the vestibule flap—when entering the tent, it had a tendency to catch on my back, bringing moisture inside with it.
The Telos TR2 has vents at its apex, but even with them propped open, I still noticed some condensation on humid nights when sharing the tent with a partner. That said, it was a big improvement over my single-wall tent, which tends to drip steadily once moisture builds up. And while I poo-pooed the separate stuff sacks in the section above, I came around to them on wet mornings—they let me stash the soaked rainfly without soaking everything else. Small detail, big win.
While the Sea to Summit Telos TR2 doesn’t quite fall into the ultralight tent category weight-wise, its materials are comparable to those used in ultralight designs. It features a 20-denier nylon bathtub floor—slightly thicker than the 15D floors found on many ultralight tents—and a 15-denier canopy and rainfly. These fabrics are on the delicate side and will require care if you want the tent to last. That said, the build quality is excellent: The DAC Featherlight poles and #7 YKK metal zippers give the Telos a high-end feel. If you treat it right—camp on soft surfaces, dry it out between uses, and properly guy it out in windy weather—the Telos TR2 should hold up well over the long haul. Just don’t expect it to shrug off sharp rocks or rough use.
If you want to fortify the Telos TR2, consider picking up a footprint from Sea to Summit. The brand offers two options: the Telos TR2 Lightfoot ($60) and the Telos TR2 Bigfoot ($70), both made with burly 68-denier fabric. The Lightfoot matches the shape of the tent floor for classic protection, while the Bigfoot extends into the vestibules, offering waterproof ground coverage for gear storage as well.
The Sea to Summit Telos TR2 is one of the easier tents I’ve set up, thanks to its freestanding design, color-coded poles, and smooth-operating aluminum clips that offer a secure, satisfying connection between the pole ends and tent body. Setup felt intuitive even for me—and I’m admittedly not the most mechanically inclined person. One of my favorite small touches was the included stuff sacks: once emptied, they double as in-tent storage bags, which I found surprisingly useful for things like snacks or electronics. Sea to Summit also added a clever “Lightbar” feature—just pop a headlamp into the pole storage sack, clip it to the tent’s apex, and voilà: soft, even overhead lighting. The tent can even convert into a semi-open shelter using two trekking poles in what Sea to Summit calls Hangout Mode, though I’ll admit I found it a bit finicky to set up. Still, for a feature-rich tent, the Telos TR2 nails the balance of smart design and overall ease.
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Longevity
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PFAS-Free DWR
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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
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Responsible Manufacturing
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Recycled and/or Reduced Packaging
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Repair Services
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Resale and/or Recycling Services
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Carbon Footprint Tracking
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Annual Impact Report
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Big Agnes Copper Spur UL2 ($600): The Reigning Lightweight Champ
The updated Copper Spur might seem like another too-rich-for-my-blood model, but hear us out. The $150 price jump is nothing to scoff at, but this is a much lighter freestanding tent (3 lb.) with a larger floor area (29 sq. ft.) than the Telos’ 28. The Copper Spur can’t match the Telos’ peak height and overall headroom, but few lightweight models can, and we think you’ll probably be thankful for carrying 10 fewer ounces on a weeklong trek. Plus, while the Telos certainly has some nifty setup hacks, the Copper Spur’s tried-and-true design has never let us down. Our recommendation: Buy some nice trail snacks with the extra cash and enjoy the weight savings. For more, see our review of the Big Agnes Copper Spur UL2.
Nemo Mayfly Osmo 2P ($450): Comparable Height, Less Sturdy
With a peak height of 42 inches, the Mayfly Osmo is one of the few lightweight tents that comes close to matching the Telos’ height. But its brow pole doesn’t have nearly the same spread as the Telos’s, and its walls slope inwards. During testing, we deemed it tight for two sleepers but perfect for one. (Spec-wise, the Mayfly’s floor area is a hair smaller, and it weighs a couple of ounces less.) The biggest difference between these tents is their structure: The semi-freestanding Mayfly relies on a single pole to anchor the foot end of the tent, which we found insufficient in high winds, during which it flattened. Although we haven’t ridden out that type of weather in the Telos, its design and sturdy poles should be up to the task. For the same price, we'll take the Telos's easier pitch, more headroom, and better strength. To learn more, check out our Nemo Mayfly Osmo 2P review.
The Telos TR2 is a spacious, smartly designed tent that’s earned a fresh life with a new, lower price point. It performs well and has some fun outside-the-box features, but it's quite as light as we'd like.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
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
While the Mayfly ranks a tad below Nemo and other brands’ premium ultralight offerings, this tent still has much to offer. It’s durable, competitively priced, exceptionally waterproof, and light enough for most backpacking trips. However, it performs poorly in wind and doesn’t offer a good space-to-weight ratio.
Interior Space
Weight & Packed Size
Weather Protection
Durability
Ease of Use
Sustainability
Is the Telos TR2 for You?
The Sea to Summit Telos TR2 is a great match for backpackers who want solid 3-season performance, above-average headroom, and appreciate the little bells and whistles that make for a more customized tent experience. It’s not the lightest tent in its class, but it makes up for it with a spacious interior, thoughtful features, and impressive weather protection—making it a strong pick for everything from multi-day trips to casual car camping. The base setup is intuitive enough for beginners, while more seasoned users will enjoy extras like Hangout Mode or the Fly + Footprint Pitch. If you’re looking for a backpacking tent that balances comfort, versatility, and weight—and don’t mind treating it with a bit of care—the Telos is a worthy trail companion.
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