Delmera Tear-Resistant Reusable Bivy

Last updated date: January 13, 2023

DWYM Score

9.8

Delmera Tear-Resistant Reusable Bivy

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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.

Update as January 12, 2023:
Checkout The Best Bivy for a detailed review of all the top bivys.

Overall Take

Are you an outdoor adventurer? If so, you'll want to have this bivy with you on every trip. It's constructed using a tough Mylar that won't rip or make a lot of noise. The bivy also features sealed seams, so you won't have to worry about water or snow penetrating the bag.


In our analysis of 12 expert reviews, the Delmera Tear-Resistant Reusable Bivy placed 1st when we looked at the top 9 products in the category. For the full ranking, see below.

From The Manufacturer

Ultra Lightweight & Compact Sleeping Bag—Delmera’s emergency sleeping bag’s dimension is 3.08 ft x 6.73 ft, weighs just 4.6oz. Small enough to fit in the palm of your hand. The survival sleeping bag comes rolled up inside handy nylon stuff drawstring bag sack so you can store it in bug out bag,camping gear,glove box,emergency bag in your car. Stay Warm and Alive in Extreme Conditions—Originally designed by NASA for space exploration, these insulating mylar bags provide compact emergency protection in all weather conditions by reflecting back and retaining 90% of a survival victim’s body heat,to cover injured victims in order to help reduce shock. The bivy sack serves as your emergency blanket, survival shelter, and emergency bivy sack all-in-one. Emergency Use and Extra-Thick Tear—Delmera Emergency Thermal Mylar Bags are ideal for all emergencies, such as travel,hunting,camping,climbing,fish on the sea. Your ultra-lightweight survival sleeping bag is constructed of 26um extra-thick mylar material with a tear and puncture resistant coating so it stands up to extreme conditions. Incredibly Packable and Protection Against Rain, Wind—Can carry this sleeping bag with your survival kit everywhere you go without weighing yourself down. Heavy-duty aluminized PE interior material can resist rain, wind, snow and other external impact. In the bad storm, can effectively keep you stay warm. CUSTOMER SERVICE – If you are not completely satisfied with the quality of your Emergency Thermal Blankets, please feel free to contact us, Delmera will make every effort to help you.

Expert Reviews

User Summarized Score

9.0
1,708 user reviews

What experts liked

What experts didn't like

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 drawstrings around the head opening to seal out moisture, full-length zippers and factory-sealed seams for extra warmth. The outer shell of the sacks is 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 drawstring that can be 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 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 armpit 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.