REI Co-op
REI Co-op Minimalist Bivy
Best ultralight shelter for solo backpackers prioritizing pack space.
This ultralight shelter offers a minimalist approach to backcountry sleeping, prioritizing weight savings and ventilation. It features a unique mesh face covering that provides excellent airflow, though it requires a rain jacket or tarp for full weather protection during storms. The design includes clever zippered arm holes, allowing for mobility while inside the shelter, and a built-in rain gutter to manage moisture. It packs down to the size of a water bottle, making it an ideal choice for those looking to shed pack weight without sacrificing essential functionality in fair weather conditions. It utilizes a waterproof, breathable laminate construction to keep moisture out while allowing internal condensation to escape, ensuring a comfortable microclimate throughout the night. The compact, low-profile design is ideal for fast-and-light adventures where every ounce counts.
$100.00
Owner Satisfaction
4.4
/ 5
Category Rank
1293
/ 2281
#1293 in Tents
Price vs Category Average
-86%
Below average
Weight
15.5
/ ounces
Who it's for
- Fastpackers and thru-hikers prioritizing a featherweight base weight
- Alpine climbers needing a compact emergency shelter for exposed ridges
- Minimalist campers seeking a quick and efficient outdoor sleeping solution
Who should skip it
- Sleepers in damp climates who require high-airflow ventilation systems
- Restless sleepers or those who feel claustrophobic in tight spaces
- Summer backpackers frequenting areas with high mosquito or fly activity
Performance breakdown
Weight Efficiency
At under a pound, it barely registers in your pack.
Packability
Compresses to water-bottle size for effortless storage in tight spaces.
Ventilation
Mesh face covering ensures consistent airflow during warmer nights.
Weather Versatility
Requires supplemental rain gear for full protection in stormy conditions.
User Mobility
Clever zippered arm holes allow for reading or cooking while sheltered.
Moisture Management
Breathable laminate construction effectively minimizes internal condensation buildup.
Key Specs
Weight
15.5 ounces
Packed Weight
0.97 lbs
Dimensions
88 x 36 inches
Packed Length
10 inches
Material
Waterproof/breathable laminate with polyester
Canopy Fabric
Laminated polyester
Floor Fabric
Coated nylon
Season Rating
3-season
Know before you buy
While the bivy uses a waterproof, breathable laminate, the mesh face covering is not waterproof. You will need to pair this with a tarp or rain jacket during storms to keep your head and face dry.
The bivy weighs 15.5 ounces, making it a very lightweight option for fast-and-light backpacking trips where every ounce matters.
The bivy is designed for a minimalist, low-profile fit, so you cannot sit up inside it. However, it does feature zippered arm holes that allow you to use your hands for tasks like reading or adjusting gear without leaving the shelter.
The bivy is constructed with a waterproof, breathable laminate designed to manage internal moisture. While some condensation is inevitable in any small, enclosed shelter, the breathable fabric and mesh face area help maintain a comfortable microclimate.
It is highly compact and packs down to roughly the size of a standard water bottle, measuring 10 inches in length. This makes it easy to slide into tight spaces in your pack.
This is rated as a 3-season shelter, meaning it is best suited for spring, summer, and fall. It is not designed to handle the heavy snow loads or extreme temperatures of winter camping.
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$100