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Sierra Designs Navassa Bivy

photo: Sierra Designs Navassa Bivy bivy sack


Price MSRP: $109.95
Historic Range: $83.27-$119.00
Reviewers Paid: $79.99-$100.00
Trail Weight 1 lb 1 oz / .48 kg
Packed Weight 1 lb 3 oz / .54 kg
Packed Length 15 in
Packed Diameter 4 in
Capacity 1
Floor Material 70D Nylon, 3000 mm
Body Material Drizone™ 40D Nylon


3 reviews
5-star:   1
4-star:   1
3-star:   1
2-star:   0
1-star:   0

I bought this bivy sack 1 year ago and have used it 4 times since then. Once at a very dusty campout out on the dry plains of Colorado, once in the rocky mountains of Colorado, once in the Sangres in Colorado, and finally once on a snow camp out on the plains.

This sack has kept me surprisingly warm but has some condensation problems (like all bivy sacks will). Overall this is my best friend up backpacking because it is soooo light and with the Z-lite Therm-a-rest pad makes an extremely good sleep.

Design: 3-4 season
Sleeps: 1
Ease of Setup: couldn't be any more simple
Weight: 1 lb. 7 oz
Price Paid: 100$

This bivy sack is an exceptional camping tool. I use it spring, summer and fall outside and in a tent in the winter. Even when I'm not backpacking I will bring this along for a nice sleep under the stars. I love the 6 zippers on it cause it just makes getting gear in the middle of the night so much easier.

I experienced a little bit of moisture on the inside of the it but that's not a problem compared to the price. I mean what do you expect, you're always gunna have a bit of moisture on the inside of any bivy sack. I've even gone survivor style with just this, a fishing pole, a flint, water bottle and a knife and this, surprisingly kept me warm throughout the night.

I highly recmomend this bivy sack for people who want to try bivy sacks out or are on a tight budget. But even then this bivy sack is the way to go.

Design: three-season
Sleeps: 1
Ease of Setup: throw it out and ur done
Weight: 1.2 lbs
Price Paid: 99.95$

I have used this bivi on three separate three-day trips. Once in North Carolina Mountains around 5,000 - 6,000 ft, tempatures ranging from 50-70 degrees. Twice in Wisconsin (Flat Land) during winter, temps ranging from 30-5 degrees.

The bivy is basic, yet it is waterproof as I encountered rain in North Carolina. It has considerable condesation problems around seams, although my sleeping bag was not damp. During winter use I used a 15 degree bag combined with this bivi in 5 degree temps. I was extremely warm, almost too warm, but once again their was considerable condensation inside the from my body heat. The material does not breathe the best and can be very stuffy completely enclosed.

Overall a good budget bivy, light (lbs 10oz), and I would recommend it for the backpacker on a budget. I rate 3 stars due to comparison with higher end gore-tex models I have used.

Design: Bivy Sack
Sleeps: 1
Ease of Setup: 4 stakes........done!!!
Weight: 1lb 10 oz
Price Paid: $79.99

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