NEMO Hornet OSMO Ultralight 1P Tent

What We Think

For solo backpackers who obsess over pack weight but refuse to sacrifice weather protection, the NEMO Hornet OSMO 1P occupies a rare sweet spot in the ultralight tent market.

This double-wall shelter scored a 8.5 overall, delivering genuine sub-two-pound performance without the durability compromises that plague many featherweight competitors.

The proprietary OSMO fabric is the headline here, and it earns that billing.

User Reviews

Owner feedback on the Hornet OSMO 1P runs remarkably consistent, earning a 9.0 in User Reviews.

The most common praise centers on that 26-ounce trail weight, which owners describe as legitimately transformative for long-distance hikers counting every gram.

The quick, intuitive single-pole setup draws repeated mentions, with several owners noting they nailed it on the first attempt in fading light.

OSMO fabric performance is the third recurring theme: owners report the tent stays drum-tight when wet, unlike traditional nylon shelters that sag and drip in sustained rain.

Ease of Use

The five-minute setup time is conservative, and owners consistently confirm it.

NEMO's single-pole architecture with color-coded clips makes this about as foolproof as semi-freestanding shelters get, scoring a 9.0 in Ease of Use.

The Gatekeeper door tie-backs keep the entry out of your way, and the Divvy Cube stuff sack lets you split tent components between hiking partners if you're sharing weight on a group trip.

Quality & Durability

The OSMO ripstop fabric represents NEMO's answer to the stretch-and-sag problem that plagues traditional nylon, and it scores a 8.5 in Quality & Durability.

The 1500mm hydrostatic head floor rating is solid for ultralight construction, though a recurring theme in owner feedback is that the thin floor requires extra care on rocky or rooty ground.

A footprint is worth the few extra ounces if you're not always camping on soft forest duff.

The lifetime warranty signals NEMO's confidence in the build.

Weather Resistance

The 1200mm HH rainfly handles three-season conditions reliably, scoring a 8.0 in Weather Resistance.

That rating is adequate for typical mountain storms but not what you'd choose for a week in the Pacific Northwest during monsoon season.

The Flybar volumizing pole clip creates meaningful headroom separation between your face and the fly, reducing condensation contact that plagues many ultralight shelters.

Space & Comfort

Here's the honest tradeoff: the Hornet OSMO 1P scored a 7.5 in Space & Comfort, and owners who run larger than average consistently flag the tight interior.

At 21.5 square feet with a 39-inch peak height, this is a shelter you sleep in, not one you hang out in during a rainy afternoon.

The single door and 7.3-square-foot vestibule are functional for solo use but leave little margin for gear storage.

If you prioritize interior space over weight savings, the Big Agnes Copper Spur HV UL1 offers a more livable interior at 2 pounds 6 ounces, though you'll pay $40 more for it.

Value for Money

At $460, the Hornet OSMO 1P scores a 9.0 in Value for Money, which might seem counterintuitive for a solo shelter at this price point.

But context matters: the Mountain Hardwear Nimbus UL 1 costs $420 and shaves a few ounces at 1.9 pounds, but it lacks the OSMO fabric's wet-weather stability.

For thru-hikers and serious backpackers, the Hornet's combination of weight, weather protection, and build quality justifies the investment.

It consistently appears on best ultralight tent roundups for good reason.

Intangibles

The Nightlight Pockets glow when you drop a headlamp inside, and the triangulated guy-outs add stability without complexity, earning a 8.0 in Intangibles.

Small touches, but they reflect thoughtful design.

Who It's For

The Hornet OSMO 1P is built for weight-conscious solo backpackers who log serious miles and need a shelter that won't slow them down.

Thru-hikers, fastpackers, and minimalist weekend warriors will appreciate what NEMO has done here.

If you're larger-framed or prefer room to spread out, this isn't your tent.

For trips with a partner, NEMO makes the Hornet OSMO 2P at just $20 more.

The Bottom Line

The NEMO Hornet OSMO 1P earns its 8.5 score by delivering genuinely ultralight performance without the weather-protection compromises that define most sub-two-pound shelters.

The tight interior is a real limitation for some body types, and we'd recommend trying before buying if you're over six feet tall.

For everyone else chasing lighter loads, this is one of the best solo backpacking shelters you can buy.