
Big Agnes
Three Wire Hooped Bivy (Pertex Version)
Your solo stronghold in the storm
The Three Wire Hooped Bivy is a four-season, ultralight solo shelter made for adventurers who demand serious protection without hauling big bulk. With a single-pole design that boosts headroom, an upper that zips open for extra access or ventilation, and a shallow bathtub floor for structural stability, this bivy holds its own in brutal weather. Head-end windows offer dual closure options — mesh when you want airflow, or a zip-coated panel when it's time to batten down. Three stake-out loops help lock it in when the wind turns nasty.
Built using ultralight, three-layer waterproof breathable nylon with a microporous membrane, a reinforced nylon ripstop floor with 1200 mm polyurethane coating, and all seams taped with solvent-free polyurethane (no PVC/VOC), this shelter delivers on durability. Pack size is small, trail weight is modest, and every material and detail is designed to balance protection, weight, and packability.
Quick Specs
- Season Rating: 4-season solo shelter
- Capacity: 1 person
- Trail Weight: ~1 lb 3 oz (≈ 539 g)
- Packed Weight: ~1 lb 6 oz (≈ 624 g)
- Floor Area / Length: ~83 in length; ~30 in head width tapering toward foot
- Peak Headroom: ~20 in
- Packed Size: ~4 in × 14 in
- Floor Material: Nylon ripstop with 1200 mm polyurethane coating
- Upper / Canopy Material: Three-layer waterproof breathable nylon with microporous membrane & tricot layer
- Window: Polyester mesh head window, zip-coated layer option for full closure
- Included Stakes / Accessories: 3 × 6″ Dirt Dagger™ UL tent stakes included; three stake-out loops
CARE & MAINTENANCE
SHIPPING & RETURNS
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Need to return something? Just let us know.

About Big Agnes