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Survival Frog Tact Bivvy 2.0 Review

An ultra lightweight, reusable emergency bivy best suited for very occasional use
Survival Frog Tact Bivvy 2.0
Credit: Survival Frog
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Price:  $25 List | $19.97 at Amazon
Pros:  Weight, packed size
Cons:  Durability, no zipper/cinch
Manufacturer:   Survival Frog
By Brian Martin ⋅ Review Editor  ⋅  Nov 8, 2021
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48
OVERALL
SCORE


RANKED
#8 of 9
  • Weather Resistance - 25% 2.0
  • Weight - 25% 9.0
  • Comfort - 20% 2.0
  • Ventilation - 15% 1.0
  • Packed Size - 15% 10.0

Our Verdict

We had mixed feelings about the Survival Frog Tact Bivvy 2.0. On the one hand, it's affordable and lightweight; on the other, many facets were sacrificed to achieve this featherweight piece of gear. In reality, this bivy is more like a mylar emergency blanket than a bivy sack. Adding to its appeal as an emergency product is the whistle attached to the stuff sack. In the end, we decided this piece could become useful for adventures when you don't plan to bivy, but there is a chance one could be injured or have to spend an emergency night out. Because of its low price and lightweight, we recommend taking one on pretty much any adventure where getting stuck out after dark is even a remote possibility. It would also be great to keep in a first aid kit.

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Overall Score Sort Icon
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Pros Weight, packed sizeLightweight, weatherproof, roomy, ease of use, bug screenLightweight, versatile, stows easily, price is rightExtremely lightweight, packableLight, durable, warm, affordable
Cons Durability, no zipper/cinchStuff sack too largeLeaky zippersExpensive, no zipperNot waterproof, tight fit for taller individuals
Bottom Line An ultra lightweight, reusable emergency bivy best suited for very occasional useThis very well may be the new standard in what we expect from a top-notch bivy sackThis model boasts an enticing weight, comfort, and versatility ratioAn effective and lightweight bivy that far outperforms other emergency or minimalist sheltersThe Escape is an excellent lightweight choice for cold dry climates or emergency situations
Rating Categories Survival Frog Tact... Outdoor Research He... Sierra Designs Back... MSR Pro Bivy SOL Escape Bivvy
Weather Resistance (25%)
2.0
8.0
7.0
6.0
3.0
Weight (25%)
9.0
6.0
7.0
8.0
8.0
Comfort (20%)
2.0
9.0
7.0
5.0
4.0
Ventilation (15%)
1
9.0
8.0
6.0
4.0
Packed Size (15%)
10.0
7.0
8.0
9.0
8.0
Specs Survival Frog Tact... Outdoor Research He... Sierra Designs Back... MSR Pro Bivy SOL Escape Bivvy
Measured Weight (oz.) 4.6 oz 16.3 oz 13.6 oz 8.9 oz 8.4 oz
Packed Size (in.) 2" x 4.5" 4" x 12.5" 3" x 9.5" 8" x 3.5" 4" x 7.5"
Waterproof? Yes Yes Yes Yes Water-resistant fabric with waterproof seams
Open Length (in.) 84" 82" 80" 88" 84"
Shoulder Width (in.) 36" 26" 36" 36" 31"
Material (top/bottom) Polyester Film Top: Pertex Shield 2.5L 100% nylon Bottom: 100% 40D nylon Top: 20D Nylon Ripstop
Bottom: 30D Nylon Ripstop
20D ripstop nylon 2 ply breathable 1000mm Metalized Spun-bonded Olefin
Bug Mesh? No Yes Yes No No
Sleeping Bag or Pad Attachments? No Yes No No No
Poles? No Yes, one overhead shockcorded Delrin pole No No No

Our Analysis and Test Results

The Frog Tact Bivvy 2.0 is essentially a more functional and protective emergency blanket. When emergency blankets are challenging to use, refold, and cover your entire body, the Frog Tact has been cut and taped into the shape of a bivy sack. There are many redeeming features of this bivy, but it shouldn't be considered equal to other emergency bivys. The Frog Tact has the potential to be destroyed from just one use, depending on the environment. The polyester film was easily stretched or punctured by twigs/rocks.

Performance Comparison


Survival Frog Tact Bivvy 2.0 bivy sack - the frog tact bivvy 2.0 is a lightweight bivy ideal for use as an...
The Frog Tact Bivvy 2.0 is a lightweight bivy ideal for use as an emergency shelter.

Weather Resistance


When it came to precipitation, the Frog Tact did a pretty good job of keeping us dry. The material itself, a reflective polyester film, was indeed waterproof. The only times we felt that precipitation was making it inside the bag was when we would wake to the entrance/exit opening flapping in the wind. There wasn't a way to secure it or cinch it closed except for just rolling it up.

Survival Frog Tact Bivvy 2.0 bivy sack - on the off chance you're stranded on a long run or happen across an...
On the off chance you're stranded on a long run or happen across an injured party, you won't be disappointed you brought the Tact along. It provides a significant layer of warmth and shelter from wind and rain. It also makes a pretty frictionless sled... Almost too frictionless.
Credit: Brian Martin

While the Tact Bivvy didn't completely close, it was much easier to manage when the wind kicked up, and a storm was brewing. It was also much quieter than some other emergency bivies.

Weight


This was among the lightest bivy sacks that we tested. The creators of this bag seem to want a bivy that was made to be the lightest it could be with nothing added extra. It is as simple as they come at 4.6 ounces. What do you get for that minuscule weight? It comes with a durable stuff sack and a plain polyester film bivy. There is no closure system such as a zipper or drawstring, and frankly, the material isn't durable enough to necessitate any of those extras.

Survival Frog Tact Bivvy 2.0 bivy sack - this was the lightest bivy in the field by far. it is a bit of a...
This was the lightest bivy in the field by far. It is a bit of a stretch to compare it to real bivys however.

In all likelihood, you will tear/poke holes through this bivy within the first few nights you use it. We had durability issues the first night we used the bag as a tiny sharp twig poked a hole in the bottom. If you want this bivy to last, we would suggest using some sort of ground cloth, which would add to the weight of your entire sleeping system.

Survival Frog Tact Bivvy 2.0 bivy sack - the tact snagged on a fallen branch and ripped within the first...
The Tact snagged on a fallen branch and ripped within the first several uses. The bivy isn't as fragile as an emergency blanket, but it isn't designed for prolonged use.

The Frog Tact has an additional little whistle on the drawstring of the stuff pouch. While it obviously doesn't add anything to the performance of the bivy (which didn't change at all) it does add a couple of grams and the ability to help rescuers find you.

Comfort


The Frog Tact is for the intrepid few. It collected more condensation than any other model, it didn't have a closure system, and it was very loud and crinkly in high wind. All of these things cut into our night of sleep. There is no hiding the fact that this is an extreme minimalist bivy, but that it is better than not having anything at all. It kept the rain off our back, and while it made a fair amount of noise in the wind and rain, it was a sufficient shield from the elements.

Ventilation


While it must be said that the ventilation and breathability of all models we tested left something to be desired, the Frog Tact was especially uncomfortable in this aspect. While the polyester film that comprises the shell was sufficiently waterproof, it didn't allow for water vapor to pass from inside the bivy out. This left us damp from condensation and ultimately feeling very uncomfortable.

Packed Size


If you remember the miniature 7.5-ounce cans of Coke, you have a good idea of the size of this bivy when it's rolled and packed in its stuff sack. It is insanely small. We felt that given this item uses much more material than a standard emergency blanket, it's miraculous that it packs down into such a tiny stuff sack. We also liked that it wasn't a chore to stuff it down to size.

Survival Frog Tact Bivvy 2.0 bivy sack - the handy size of the tact lets you bring it along on just about any...
The handy size of the Tact lets you bring it along on just about any adventure.

It folds and rolls up into the stuff pouch with minimal effort. The measured size of the packed bivy was about 2 inches wide by 4.5 inches long. It would even be reasonable to throw this thing in your ultrarunning backpack for trail emergencies and unplanned bivys. You probably won't even remember it's in your pack.

Survival Frog Tact Bivvy 2.0 bivy sack - considering it is barely larger than a traditional emergency...
Considering it is barely larger than a traditional emergency blanket, the Frog Tact is immensely more functional.
Credit: Brian Martin

Value


The Tact is one of the most inexpensive bivy sacks that we tested. This seems like a drop in the bucket compared to some of the expedition bivies. While the Frog is quite cheap, consider its durability when you're buying it. If you really only need something to throw in the bottom of your pack for unforeseen circumstances, it is a great value. If you're looking for a bivy to spend night after night in, this bag will fall apart necessitating you to buy several more. Because it won't stand up to the abuse of daily usage, it might be wise to have one bivy for heavy use and a backup Frog Tact for shorter adventures with the off chance of a bivy.

Survival Frog Tact Bivvy 2.0 bivy sack - the tact is best suited as an emergency shelter when you have run...
The Tact is best suited as an emergency shelter when you have run out of options. Definitely don't rely on this bivy as a trustworthy night after night shelter. It's simply not durable enough.

Conclusion


The Survival Frog Tact Bivvy 2.0 to be a great option for shelter and emergency weather protection in a tiny lightweight package. Durability restricts this bivy to very few uses before it starts to show the wear but if you're very careful with it, it could last. While being similar to an emergency blanket, the Tact is more durable and better designed to keep you warm and dry as it is formed into a sleeping bag shape and doesn't require you to hold it wrapped around your body.

Brian Martin
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