Best Bivy Sacks

1. Go Time Gear Life Bivy Emergency Sleeping Bag 

• STAY WARM AND ALIVE IN EXTREME CONDITIONS: The Life Bivy emergency sleeping bag serves as your emergency blanket, survival shelter, and emergency bivy sack all-in-one. Engineered for emergencies and survival, you have the ability to call for help using the 120-decibel survival whistle and the bright orange color alerts rescuers. 
• PATENT PENDING PARA-SYNCH TECHNOLOGY PARACORD DRAWSTRING & SURVIVAL WHISTLE: The 120-decibel emergency whistle cuts through wind and trees alerting rescuers up to 1-mile away. The 550lb nylon core patent pending Para-Synch Technology drawstring can be used to secure or repair gear, build an emergency shelter, or start a fire.
• EXTRA-THICK TEAR AND PUNCTURE RESISTANT MATERIAL: Your ultra-lightweight emergency bivvy 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.
• PROTECTION AGAINST RAIN, WIND, & SNOW: Your waterproof and windproof survival bivvy bag is made of extra-thick tear & puncture resistant polyethylene material with sealed seams locking out harsh weather to cover & protect you in the worst conditions.
• ULTRA LIGHTWEIGHT & COMPACT: Small enough to fit in the palm of your hand and weighing just 4.1 ounces, the Life Bivy survival sleeping bag comes rolled up inside a durable waterproof stuff sack so you can store it nearly anywhere. 

2. Tact Bivvy Compact Ultra Lightweight Sleeping Bag

• ULTRA LIGHTWEIGHT COMPACT SLEEPING BAG: Made out of ultra-lightweight HeatEcho reflective polyester film, this thermal survival blanket sleeping bag weighs just 4.8 ounces. It also compresses into a tiny oversized stuff sack, so you can reuse and carry this emergency sleeping bag with your survival kit everywhere you go. 
• MADE FOR EMERGENCIES: The green color of this light weight sleeping bag cover helps you blend into your surrounding to stay hidden when you don't want to be found. Plus, the HeatEcho material reflects 90% of your body's heat back to you, making it an essential survival tool and addition to your bug out bag, emergency shelter, camping gear or car emergency kit.
• INCREDIBLY DURABLE: 100% WATERPROOF: For its weight and thinness, these sleeping bags will surprise you with their strength. The material ensures these sacks are tear-resistant, windproof AND water proof. 
• EXTRA FEATURES: The drawstring is actually para-tinder paracord, so you can use it to tie down your gear or expose the tinder cord and use as a fire starter! On the end of the drawstring you will find a 120 decibel whistle for emergencies, and a carabiner to you can clip to your bag or pack.
• BEST GUARANTEE IN THE INDUSTRY: We have over 10 years’ experience in the industry. We guarantee our product with our 6 Month "Any Reason" Refund Guarantee.

3. Mezonn PE Emergency Sleeping Bag

• STAY WARM AND ALIVE IN EXTREME CONDITIONS: Mezonn PE emergency sleeping bag serves as your emergency blanket, survival shelter, and emergency bivy sack all-in-one. PE material is extremely resistant to cold, which still has some mechanical properties at -600C and softness at -700C.
• INCREDIBLY DURABLE: For its weight and 28UM extra thinness, this sleeping bag will surprise you with its strength. The material ensures a tear-resistant, windproof AND waterproof sleeping bag. Plus, this emergency bivvy bag features reinforced taped seams, creating a weather-resistant barrier between you and the frigid cold.
• PACKAGE INCLUDE - 2 Packs. Each emergency sleeping bag measures 3.08 ft x 6.73 ft(37*80.7 inches). For better performance, please keep it sealed.
• CONVENIENT - keeping it with your survival kit, in your bug out bag, camping gear, and glove box so you have it ready when you need it.
• MONEY BACK GUARANTEE - Our goal is to keep each customer 100% satisfied. If you are not satisfied for any reason, we will give you a full refund, no questions asked.

4. Delmera Emergency Survival Sleeping Bag

• ULTRA LIGHTWEIGHT & COMPACT SLEEPING BAG—Dimension: 3.08 ft x 6.73 ft(37*80.7 inches), enough to accommodate an adult; Lightweight at 4.6 oz, it's easy to carry. Small enough to fit in the palm of your hand, Delmera’s Bivy survival sleeping bag comes rolled up inside handy nylon stuff drawstring bag sack so you can store it nearly anywhere. 
• 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. Furthermore, the bright orange color of the waterproof sleeping bag helps rescuers identify you with ease.
• EMERGENCY USE AND EXTRA-THICK TEAR—Delmera Emergency Thermal Mylar Bags are ideal for all emergencies. 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—Light and massively compact emergency bivy with handy nylon stuff drawstring bag sack, so you 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.
• 100% MONEY BACK GUARANTEE - If you are not completely satisfied with the quality of your Emergency Thermal Blankets

5. Zmoon Emergency Sleeping Bag

• MADE FOR EMERGENCIES: Multipurpose used as a survival emergency bag, poncho, emergency shelter and more. Perfect for emergency situations where warmth or protection from all-weather conditions is required. Helps prevent hypothermia and shock by retaining/reflecting up to 90% of a user's body heat.
• STAY WARM AND ALIVE IN EXTREME CONDITIONS: Your survival bag is constructed of mylar material with a tear and puncture resistant coating so it stands up to extreme conditions. Emergency sleeping bag is guaranteed, not easy to tear, good waterproof performance, strong wind resistance, strong insulation performance.
• EXTRA LARGE FOR FULL BODY PROTECTION：2 Pack extra large (79 x 47 inches) emergency bivvy survival sleeping bag for full body protection. Lightweight at 4.1 oz, small enough to fit in the palm of your hand, easy to store it nearly anywhere. Zmoon sleeping bag in your hiking pack, go bag, bug out supplies, and glove box so whether you’re trapped in your car during a winter storm or forced to spend an unplanned night outside, you’re ready for the harshest conditions Mother Nature throws at you.
• EASY TO USE: Easier than an emergency space blanket, Just pull out of the stuff sack, unroll and climb inside. Emergency sleeping bag can be used as a sleeping bag liner to keep your body temperature.  This bivy bag is small and lightweight, easy to carry and store.
• WHAT YOU GET: 2 Pack Survival Sleeping Bags, Our Friendly Customer Service. If this item fails to meet your expectations

6. Outdoor Designs USA Emergency Waterproof Bivy Sack Sleeping Bag

• ESSENTIAL PROTECTION FOR EMERGENCIES - camping, hiking, sleeping outdoors, bug out bag, in a stranded car and much more. Reflects 90% of your body heat to keep you toasty warm in winter conditions. Bright orange color and 120 Decibel whistle helps rescuers locate you fast. 
• SUPER LIGHTWEIGHT - weighs just 4.2 ounces. When folded, it's so small it fits in the palm of your hand. Amazing for putting in a backpack, keeping in the glove compartment of your car, truck toolbox, or included in a first aid kit. 
• TOUGH, DURABLE CONSTRUCTION - made of rugged, 26um long lasting polyethylene. This is tear and puncture resistant while being fully windproof and 100% waterproof and breathable. Note the reinforced taped seams that let you use it over and over again with reliable durability.
• FULL SIZE XL TO COVER ONE OR MORE PEOPLE - at 7ft x 3ft. It takes just seconds to set it up and begin using, giving impressive protection from rain, sleet, snow, and driving winds for survuval protection. This is just 4 x 3 inches when folded and comes with a 120 decibel emergency whistle on the paracord drawstring.
• 100% MONEY BACK GUARANTEE - ensures this will be your best bet for a pleasing no-risk purchase. Many people are stocking up with 2 or 3 of these to outfit the entire family for fun, comfort, and ultimate safety. 

7. SERGEANT Emergency Sleeping Bag

• MULTI-FUNCTIONAL FOR ALL YOUR NEEDS – This Emergency Mylar Sleeping Bag with its Nylon Carrying Pouch measures 3 feet x 7 feet and can comfortably fit 1 adult. It also can serve other functions such as an emergency blanket, survival shelter, emergency bivy sack, ground cover, rescue or distress beacon, poncho, rain tarp or sun shade.
• EXTRA-THICK, LIGHTWEIGHT & PORTABLE – Made of tear and puncture resistant extra-thick 26 micron mylar material, originally designed for NASA, this survival bivy sack weighs just 4.1 ounces and is small enough to fit in the palm of your hand. It comes rolled up inside a durable nylon carrying pouch and is the perfect size for your hiking backpack, go bag, bug out supplies, survival kit or vehicle glove box.
• PROTECTION AGAINST RAIN, WIND, & COLD – Designed to keep you safe and protected in the harshest weather conditions, this waterproof and windproof survival bivy bag has a reflective interior that traps 90% of your body heat – which will help prevent hypothermia.
• STAY ALIVE IN EXTREME CONDITIONS – Be prepared for the worst with this emergency thermal bivy sack. So, whether you are trapped in your car during a winter storm or forced to spend an unplanned night outdoors, you and your family will be ready for the unexpected.
• 100% LIFETIME WARRANTY – As an American owned and operated company, your 100% satisfaction is our #1 priority. Sergeant products are therefore guaranteed against defects in workmanship and materials for the life of the item. 

8. Vijoly Life Bivy Emergency Sleeping Bag

• ESSENTIAL EMERGENCY SURVIVAL KIT - Be prepared for the worst with this emergency sleeping bag set, containing 3 survival gear essentials: a sleeping bag, a thermal blanket and a survival whistle. The sleeping bag was designed for extreme weather conditions, where keeping your body warmed up is essential. The reflective interior of the bivy sack protects you from hypothermia by retaining 90% of your body heat. 
• LIGHTWEIGHT, COMPACT AND WATERPROOF MATERIALS - Made of lightweight extra-thick tear and puncture-resistant mylar material, this emergency sleeping bag survival bag weighs only 4.6 oz, being small enough to fit in the palm of your hand. It comes rolled up in a drawstring carrying pouch, so you can store it almost anywhere, like a hiking pack, go bag, car glove box. 
• MULTIFUNCTIONAL EMERGENCY SLEEPING BAG - This emergency thermal bivy bag has many using possibilities, serving as an emergency blanket, survival shelter, raincoat, sunshade, ground cover, water collector and many more. Measuring 37”x 80”, the life bivy can comfortably fit 1 person.
• BONUS THERMAL BLANKET FOR EXTRA PROTECTION - Besides the emergency bivy sack you will also receive a mylar thermal blanket, an all weather survival blanket with a size of 51”x 82”, being the perfect survival package that will fully protect you. It is reusable, waterproof, windproof and moisture-proof, being a great choice for camping trips or sports events.
• 100% MONEY BACK GUARANTEE - We want to offer you the best products that will keep you safe and alive in an emergency situation. If you are not 100% satisfied with our survival sleeping bag

9. Bivy Emergency Sleeping Bag 

• BE PREPARED TO SURVIVE – Very compact, lightweight, reusable and durable survival sleeping bag to protect you from hypothermia, rain, snow and wind. Small enough to fit into your bug-out-bag, jacket pocket, hiking bag, hunting bags or in your car glovebox. Big enough to sleep inside.
• THE RIGHT SIZE – Extremely lightweight and compact. The stuff bag fits in the palm of your hand. Weighs only 4.2 oz. Measures 7x3 feet opened. Also great sleeping bag liner for a 20°F boost. Fold it, roll it and stuff it back into the nylon sac in just 30 s.
• UNIQUE OFFER – Includes THE ULTIMATE PREPPER'S SURVIVAL HANDBOOK , the pull grip is a 100db emergency whistle to notify rescuers up to one mile away, a nylon stuff bag, the usual Atomic Bear lifetime warranty and a nice compact packaging. Add to cart now.
• DURABLE & REUSABLE– Made of 26 um thick tear-resistant polyethylene. The interior reflective material won’t fade. The heat sealed seams won’t let anything in and won’t break.
• SURVIVE THE ELEMENTS – Cold: space blanket technology inside to reflect up to 90% of your thermal body heat to seal it in. Get inside the Bear Bivy to feel and instant warmth.

10. Wild Peak Emergency Waterproof Bivy Sack Sleeping Bag

• Wild Peak Survival bivys are a perfect aid for emergency situations. It's necessary when camping, hiking, mountain climbing, hunting, trekking, backpacking, biking, boating, car rides, outdoor trips and wilderness adventures. Your kit can never be too prepared.
• The Bivy emergency sleeping bag serves as your emergency blanket, survival shelter, and emergency bivy sack all-in-one. Perfect for your bug out bag, survival gear, car survival kit, or bug out gear, the Bivy is an essential tool to ensure you stay alive in an emergency.
• Your ultra-lightweight emergency bivvy 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. It can be folded up and placed back inside the waterproof Nylon stuff sack for your next adventure.
• Your waterproof and windproof survival bivvy bag is made of extra-thick tear & puncture resistant polyethylene material with sealed seams locking out harsh weather to cover & protect you in the worst conditions. The reflective interior of the bivy emergency sleeping bag protects you from hypothermia and keeps you warm by reflecting 90% of your body heat back to you.
• Small enough to fit in the palm of your hand and weighing just 4.1 ounces, the Wild Peak Bivy survival sleeping bag comes rolled up inside a durable waterproof stuff sack so you can store it nearly anywhere. 

If you are looking for a very warm bivvy sack, then Tact is a good choice. In fact, we can say that this is a survival tool that is a great addition to your camping kit.

At just 4.8 ounces, this Bivvy Sack is very light. The reason is that it is made from ultra-thin reflective polyester film. This special material makes it so light and compact, that when you put it in sack, it will fit int he palm of your hand.

The best way to use it, is to use it like a liner for your sleeping bag and really crank up the heat by at twenty degrees.

Many users have said that using it as a lining under their sleeping bags also resulted in the cold getting blocked out. The Tact Bivvy Sack is a great item to have in your survival kit. Others who have used it say that it is a a truly useful item that can be used as almost anything, from a sleeping bag to a water catcher to a tarp. Also, the small size which is just a little bigger than a person's fist make it excellent to pack in anywhere. This is a great item, and should definitely be a part of your camping and survival equipment.