Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Big Agnes - Open
  • Big Agnes - Detail
  • Big Agnes - Detail
  • Big Agnes - Detail
  • Big Agnes - Three Wire Bivy -
  • Big Agnes - Open -
  • Big Agnes - Detail -
  • Big Agnes - Detail -
  • Big Agnes - Detail -

Current Color

  • Big Agnes - Three Wire Bivy -

Big Agnes Three Wire Bivy

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Bivy Sacks we have in stock.

View Similar Products

Be the first to review


Manage your microclimate.

One of the biggest downsides to using a common bivy is the inevitable condensation-soaked sensation upon waking up on dewy mornings. Upgrading your ultralight camping experience, the Big Agnes Three Wire Bivy features a 3-layer waterproof/breathable membrane for superior protection from inclement conditions. What's different here is the 3-layer construction's embedded nanofiber technology, which actively disperses moisture to the outside for rapid evaporation. This technology regulates your sleeping climate, so you're never soaked in condensation, which is especially important on cold-weather trips where getting wet isn't an option.

The Three Wire Bivy is equipped for four-season use. Take it on perfect summer evenings, crisp fall trips, and frigid alpine missions with peace of mind. Ultralight nylon keeps its overall weight down, with all the seams fully taped to prevent moisture and rain from seeping through. Mesh ventilation allows you to stargaze on summer evenings without being attacked by blood-thirsty mosquitoes. DAC Featherlite NSL poles retain solid strength, with six superlight aluminum J stakes for solid hold in windy conditions. There's even oversized, reinforced stake-out loops, which can be held down with ski poles or ice axes in challenging winter conditions.

  • Lightweight bivy for four-season camping
  • 3-layer waterproof/breathable for demanding conditions
  • Nanofiber technology practically eliminates condensation
  • Mesh ventilation for optimal comfort on summer evenings
  • Compact shelter for a solo camper
  • Based in Colorado's Rockies, Big Agnes makes rugged outdoor shelters
  • Item #BAG009U

Tech Specs

[membrane] 3-layer waterproof/breathable membrane (w/electrospun nanofibers), [outer fabric] ultralight nylon, [inner fabric] close mesh, [floor] Cordura ripstop
yes, DAC Featherlite NSL (w/press fit connectors)
Pole Attachment
plastic clips and sleeves
taped with waterproof, solvent-free polyurethane tape (no PVC or VOCs)
[widest end, at head] 90 x 35 in, [narrow end, at foot] 90 x 25 in
Interior Height
20 in
mesh ventilation (unzippable)
Packed Size
4.5 x 18.5 in
Trail Weight
1 lb 9 oz
Recommended Use
ultralight backpacking, alpine & expedition, emergency shelter
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?