Bristlecone Bivy

The Bristlecone Bivy provides a waterproof floor with a water resistant upper to protect your quilt from spray and mist. Featuring a large mesh window and long U shaped zipper extending from waist level across the top, allowing for easy entry and exit. Designed to work well with both pyramid shelters and tarps.
  • Large Mesh Panel- No-seeum mesh window over your head provides ventilation.

    Long #3 YKK Zipper- Long inverted U zipper running from waist level to above head, allows easy entry and exit.

    Waterproof ROBIC® Nylon Silicone/UTS Coated Floor- ROBIC® high tenacity yarn and UTS coating provide extra tear strength, abrasion resistance, and it is less slick than a traditional silicone coating.

    Bathtub Style Floor- Reduced seams in the floor for increased weather resistance.

    Pertex Quantum Air Upper- This highly breathable, water resistant fabric features a long lasting DWR coating that outperforms and outlasts other DWR treatments. Increased air permeability reduces condensation while remaining highly wind resistant.

    Internal Sleeping Pad Attachment- Internal sleeping pad attachment keeps your sleeping pad in place. The Cord Clip locations on our quilts line up with the pad attachments in our bivys. Cinch your pad in place in your bivy, then simply clip your quilt onto the same cords.

    Full Bug Protection- Full bug protection keeps the creepy crawlies at bay, making the bivy ideal for use under a tarp or floorless shelter.

    Elastic Hang Loops- Tie loops at the head and foot to keep the bivy fabric off your face and quilt.

    Generous Dimensions- Allows room inside for gear storage. Both regular and wide versions fit 25" wide sleeping pads.

    Stake Loops at the Corners- Ribbon loops at the corners facilitate drying or allow staking.

    Stuff Sack Included- Included stuff sack for storage. Adds 0.25 ounces.

  • Specs

    Specs 5'6" 6' 6'6" Wide 6' Wide 6'6"
    Weight 7.0 oz 7.3 oz 7.7 oz 7.8 oz 8.2 oz
    Length 77 inches 83 inches 89 inches 83 inches 89 inches
    Shoulder Girth 77.5 inches 77.5 inches 77.5 inches 82 inches 82 inches
    Foot Girth 63.5 inches 63.5 inches 63.5 inches 68 inches 68 inches
    Peak Height 17 inches 17 inches 17 inches 18 inches 18 inches
    Packed size 3.5 x 7.5 inches 3.5 x 7.5 inches 3.5 x 7.5 inches 3.5 x 7.5 inches 3.5 x 7.5 inches
  • Pertex Quantum Air

    The best fabric you’ll find for the upper shell of an ultralight bivy.
    1. Excellent DWR to protect you from spray and mist
    2. Increased Air Permeability reduces condensation

    ROBIC® Nylon with Silicone/UTS Coating

    ROBIC® high tenacity yarn and UTS coating provide extra tear strength and abrasion resistance for our bivy floor

Customer Reviews

Based on 3 reviews
Stoked on first impressions!

Really stoked on the design and detail. Only spent one night in it so far camping on the west coast of Canada.

Humidity/moisture wasn’t present so I can’t comment on its performance with dew/condensation just quite yet. Love how lightweight and compact this is, it kept the bugs out and the mesh seemed to stay off my face even without using the tie-out. The top material is really light and looks like it warrants being pretty careful with but that’s the trade off for ultra light weight!

I’ve had “waterproof” bivy sacks before but I always ran into internal condensation problems as they didn’t breathe properly. I plan to pair this with a tarp/shelter when moisture may be an issue so hopefully with that combo the condensation that accumulates in the less breathable ones will be a non issue in this more breathable one.

Just arrived; not used in the field yet

Arrived very quickly and appears as advertised. There are two stake loops on each end which was a pleasant surprise. Weight on my scale was 7.5oz with stuff sack. I’ll try to update after it’s intended use with Zpacks Hexamid pocket tarp with doors.


Just setup my bristlecone bivy in the yard. I usually find areas I think can be approved on but not on this The zipper design is especially noteworthy. No concerns of left or right entry. Enough space behind your head for some gear which will also keep the net off your face if you don’t want to use the tie off loop. I removed the pad tieouts . Don’t think I need them. Saved 11 grams. Perfect size bug netting. I’ve had quite a few different bivys but this is by far the best.