Sierra Designs Backcountry Bivy

What We Think

At under a pound, the Sierra Designs Backcountry Bivy is one of the lightest enclosed shelters you can buy, and it's designed specifically for campers who use roomy sleeping systems like Sierra Designs' own Backcountry Bed.

It scored a 7.4 overall, earning high marks for simplicity and packability while losing points for moisture management issues that owners consistently flag.

This is a bivy for fair-weather minimalists who understand what they're getting, not a shelter that pretends to do everything.

Ease of Use

The one-minute setup time is real, and owners confirm it's essentially a "roll it out and climb in" situation.

The large U-shaped entry is the most-praised feature in owner feedback, making it far easier to get in and out than traditional bivies with cramped openings.

That same opening doubles as ventilation on clear nights, and the integrated bug netting means you can leave it unzipped without waking up with mosquitoes.

It scored an 8.0 in Ease of Use, which is excellent for this category.

Quality & Durability

The 30D nylon ripstop floor is reasonably tough for a sub-one-pound shelter, though it's worth noting that most ultralight bivies sacrifice floor durability for weight savings.

Sierra Designs backs it with a limited lifetime warranty, which signals confidence in the construction.

The tapered cut that owners praise for weight savings also means the materials are working hard, so treat it like the precision tool it is rather than a burly shelter you can abuse.

It scored an 8.0 in Quality & Durability.

Weather Resistance

Here's the honest weakness: this bivy struggles with moisture, and owners are vocal about it.

A recurring theme in negative reviews is heavy condensation in the footbox, which is a common bivy problem but particularly pronounced here.

Owners also flag that the non-sealed zippers can leak in sustained rain, making this a shelter that genuinely needs a tarp overhead in wet conditions.

If you're planning trips where rain is likely, check out our guide to the best camping tarps before you head out.

The Snugpak Ionosphere Bivy Tent offers better storm protection with a hooped design and sealed seams, though at $299 and 3.9 lbs, you're paying significantly more in both dollars and pack weight.

It scored a 7.0 in Weather Resistance, which is fair for a bivy in this price range but requires realistic expectations.

Space & Comfort

The 16.7 square feet of floor space is generous for a bivy, and the design specifically accommodates wide sleeping pads and puffy bags.

That said, the 10-inch peak height means you're not sitting up in here, and anyone who feels claustrophobic in tight spaces should test their tolerance before committing to a bivy as their primary shelter.

It scored a 7.0 in Space & Comfort.

Value for Money

At $170, the Backcountry Bivy sits in the middle of the ultralight bivy market.

The Alpkit Hunka costs just $95 at a nearly identical weight, though it's a simpler design without the U-shaped entry or integrated bug netting.

For the feature set and weight, $170 is reasonable but not a screaming deal.

It scored a 7.0 in Value for Money.

User Reviews

Owner feedback is consistent: people love the entry design and packability, and they're frustrated by the condensation and zipper leakage.

It scored an 8.0 in User Reviews, reflecting genuine satisfaction from campers who use it within its limitations.

Who It's For

This bivy is built for ultralight backpackers who prioritize speed and simplicity over weather protection.

If you're a fair-weather thru-hiker, a bikepacker counting grams, or someone who wants emergency shelter without the weight of a full tent, the Backcountry Bivy makes sense.

It's also a smart choice for campers already using Sierra Designs' wider sleeping bags who need a bivy that won't compress their insulation.

The Bottom Line

The Sierra Designs Backcountry Bivy scored a 7.4 and earns it through exceptional packability and a thoughtful design for wide sleeping systems.

The moisture management issues are real and well-documented, so this is a shelter that rewards realistic expectations.

Bring a tarp for wet weather, and you've got a sub-one-pound shelter that does exactly what it promises.