“Ultralight four season tent” is a bit of a misnomer as it’s impossible to be truly ultralight when dealing with harsh winter conditions. The Samaya 2.5 comes as close as possible though at a little over 3 pounds and takes a genuinely revolutionary approach to four-season tents. It’s a single wall shelter, which is unique in the four-season tent realm, and uses a proprietary waterproof-breathable Nanovent membrane. The Dyneema version pairs a Dyneema Floor and roof with Nanovent walls to save over a pound from the classic Nanovent version, though the original Nanovent tent is an excellent tent in itself.
Samaya makes a slightly smaller and lighter version (the Samaya 2), but the 2.5 offers a little more functionality for most four-season recreators. The Samaya 2.5 has a hexagonal footprint with 34 square feet of floor space; notably, it does not have a vestibule. One can be purchased separately, but it nearly doubles the pack size and this tent's interior has enough space for two people plus gear. Its shape sheds wind from all directions equally well, and the steep walls prevent snow accumulation that plagues lower-angle designs. It has a 47-inch peak height with steep vertical walls that maximizes livable space and sheds snow, and it cuts weight by only having one generous-sized door.
The setup is fast. The DAC aluminum poles quickly slide into sleeves and click into grommets, which is important when setting up a tent after a long day in the cold and snow, possibly in the dark. The sleeves also add strength in the wind and snow. In the Dyneema version, the DCF bathtub floor that wraps up the sides provides great protection from ground moisture.
Condensation management is the Samaya 2.5’s standout feature. The Nanovent membrane has significantly higher waterproofing and breathability than any other material and Samaya rates its breathability at 40,000g/m2. The dual adjustable roof vent limits frost buildup to the top of the tent and while there is still some condensation, it’s nowhere near the soaking-wet interior I've experienced while ski camping with other single-wall shelters like the Black Diamond Firstlight or MLD SuperMid.
Single wall shelters are generally less warm than double wall shelters, though I think the benefits outweigh the reduced warmth. The Samaya 2.5 also does not have snow flaps to save weight, but most modern ski campers I know build walls around their tents while digging a platform so these would also add unnecessary weight. Realistically, the biggest drawback is the price—at $1,200 for just the tent body, you're looking at expedition-level pricing that puts this firmly in the realm of serious alpinists and those who want the best-of-the-best gear.
There are a handful of other good, ultralight four-season tents on the market and some of them are admittedly lighter or cheaper. But they come with certain compromises—anything made with polyester, nylon, ChallengeTNT, or full Dyneema will not breathe nearly as well as Nanovent and will have serious condensation issues. Some, like the Tarptent ArcDome (which is a great tent), are only rated to 4,000-millimeter hydrostatic head (waterproofing) or less. Others, like the Locus Gear Djedi, feel a bit fragile for seriously gnarly alpine conditions. Not everyone will need a four-season tent that’s fully waterproof or one this premium, but those who spend a lot of time camping in varied winter conditions will value the Samaya 2.5’s features.
After testing the Samaya 2.5, I think it's best suited for alpinists, ski mountaineers, and expedition climbers who need legitimate four-season protection at minimal weight and can justify the price. Occasional winter campers can likely get away with a less premium tent but if you're regularly dealing with serious alpine conditions where tent failure isn't an option, the Samaya 2.5 delivers the best performance out of a fairly niche group of tents.
What We Look for When Testing Ultralight Tents
The following criteria are worth considering if you’re thinking about purchasing an ultralight tent. And how I approached my own testing criteria when building this list.
Durability
To save weight, ultralight tents tend to use lighter, thinner materials in the 7-20D range that are fragile compared to traditional 40-70D tent materials. They require careful site selection and gentle handling. They can last years if treated carefully, but many tents are technically only guaranteed for one thru-hike.
Space and Comfort
A core principle of ultralight hiking is spending more time hiking and less time hanging out inside your tent. Thus, ultralight tents are designed to save weight and they tend to have the smallest livable area inside—just enough room for your body, sleeping pad, and essentials. More recent two-person tent styles have prioritized headroom and overall livability, but one-person tents will still be a tight fit for most people. If you like spreading out, two doors, interior pockets, sitting up comfortably to read, or other comfort-focused features, ultralight designs might feel bare bones.
Single-Wall vs Double-Wall
Traditional tents use a double-wall design consisting of the main tent body and a rainfly over it. This helps them manage condensation by creating an air gap between the fly and inner tent. Double-wall tents are almost always freestanding or semi-freestanding designs that use connected poles to pitch with no or minimal stakes, so they will come with a weight penalty.
Many ultralight tents are single-wall, meaning they eliminate the separate rainfly to save weight. In a single-wall tent, the same fabric that forms the tent body is also your waterproof barrier. These tents often struggle with condensation as a result of this design, but the fabrics dry quickly. (On thru-hikes, I often dry my tent out at lunch.)