S.O.L. Survive Outdoors Longer 70% Reflective Escape Bivvy

Last updated date: October 30, 2020

DWYM Score

9.0

S.O.L. Survive Outdoors Longer 70% Reflective Escape Bivvy

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We looked at the top Bivys and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Bivy you should buy.

Editor's Note October 30, 2020:
Checkout The Best Bivy for a detailed review of all the top bivys.

Overall Take

The reusable bivy reflects 70% of your body heat to provide warmth, while the breathable fabric prevents condensation from forming to keep you dry. The product measures 84-by-31-inches and weighs about 8.5 ounces.


In our analysis of 12 expert reviews, the S.O.L. S.O.L. 70% Reflective Escape Bivvy placed 4th when we looked at the top 6 products in the category. For the full ranking, see below.

From The Manufacturer

Prepare for the worst with a Survive Outdoors Longer bivvy. If forced to spend an unexpected night outdoors, a bivvy is going to improve your odds of survival. For nights above 50 degrees Fahrenheit, leave the sleeping bag at home and travel ultralight with a bivvy. It provides just the right amount of warmth.

Expert Reviews

Expert Summarized Score

10.0
2 expert reviews

User Summarized Score

9.2
432 user reviews

What experts liked

Highly water resistant and built from durable fabric. The olive green blends into its environment and tear/puncture resistant.
- BestReviews
High quality fabric, prevents condensation and the fabric reflects back your body heat.
- Survivor's Fortress

What experts didn't like

It is a bit tight and a bit expensive. It doesn't keep you as warm if the temperatures drop under 40 degrees.
- BestReviews
Not long enough for tall people and could be a bit wider as well.
- Survivor's Fortress

An Overview On Bivys

Originally developed as a one-person shelter to protect mountaineers and climbers from rain and snow during multi-day ascents, the bivouac sack — or bivy sack — now has a wider range of uses. A traditional bivy sack, made from a waterproof, tear-resistant fabric, performs two basic functions: to increase the user’s body temperate and keep them dry.

Bivies — reminiscent of an ultra-lightweight sleeping bag or extra-large rain jacket shell — have all have a built-in head opening and come with features like draw strings around the head opening to seal out moisture, full-length zippers and factory-sealed seams for extra warmth. The outer shell of the sacks are available in many different colors, including bright, attention-grabbing hues like red and yellow to improve the user’s visibility to rescue crews.

The products, which are stored in a compact bag, are ideal for emergency preparedness, backcountry excursions, long-distance biking trips, train running and winter camping. The primitive shelters are ideal for sleeping in technical terrain, where ledges are too cramped for a tent, but can also be used as a poncho, blanket, sleeping bag liner, ground cover and more. Some bivy sacks are also equipped with a whistle and a nylon core draw string that can used to secure or repair gear, making those options great for emergency situations. Because bivies can be reused, easily stored and often weigh just a few ounces, they’re convenient for travel and outdoor adventure.

What’s the difference between a bivy sack and a bivy shelter? The latter is a low-rise tent that includes mesh panels attached to the head opening or hoops to keep the fabric off your face (think: a fancy bivy sack).

The Bivy Buying Guide

  • Depending on the product, bivy sacks are designed to help users retain up to 90% of their body heat.
  • If you’re a tent camper who wants to downsize to a no-fuss shelter, a bivy sack could be the answer; since they require no setup, pitching or breakdown, they’re great for adventurers who want to maximize their time with a fast overnight.
  • Bivies are great alternatives to a tents in warmer temperatures (for example, above 50).
  • If you plan to use your bivy sack for camping, increase your comfort by: placing a bottle filled with hot water in the core zone (your crotch or arm pit area) for extra warmth, use a sleeping pad underneath for extra cushion and pull the drawstring around the opening snugly around your head to avoid breathing into the bivy and to seal out moisture.