Excelente como saco de dormir de emergencia o cubre saco convencional. Buen sellado y resistente.

Hatte das Vergnügen das Bivvybag nur zusammen mit dem Sea to Summit Thermolite Reactive Liner bei morgendlicher Tiefsttemperatur von 12 Grad zu testen (also ohne Schlafsack 🤦‍♀️). Es war in der Früh schon kalt aber es war erträglich. Hatte aber auch Leggins, Socken, Merino Unterhemd, Merino Langarmshirt und langärmliges Trikot an 😉Gelegen bin ich auf einer Isomatte mit R3,5 Rating und in einem leichten 1 Mann Zelt.

Ottima la tenuta termica capace di valorizzare, proteggere e migliorare qualsiasi sacco a pelo. Se la temperatura cambia da un giorno all’altro la protezione aggiuntiva fornita permette di adattare il comfort del riposo mantenendo costante il calore, senza bisogno di cambiare sacco a pelo. Ottimo il peso basso, la possibilità di piegarlo senza difficoltà anche dopo una notte di utilizzo. Eccezionale la traspirabirabilità: nessuna condensa, nessuna umidità, ho dormito asciutto tutto il tempo!

Excelente, dormí con el sleeping dentro del vivac y fue super calientito, no pasé frío en toda la noche y no hubo tanta condensación dentro del sleeping cómo con una manta térmica

Produits parfait pour les amateur de bivouac et rondeneur très léger conserve bien la chaleur je vous le recommande

This is absolutely worth the weight and the money. It's a game changer. I would recommend to anyone, but especially to UL hikers. It has a quarter zip, right hand side, drawstring that pulls the hood tight around you. Just be sure that your nose and mouth are positioned so that you are breathing outside of the bivvy, otherwise you will produce condensation inside. I have never had an issue with condensation inside from the rest of my body though, only when I had my head completely covered over and was exhaling inside the bivvy. This is not some cheap thin mylar emergency blanket material. It's durable and meant to be used over and over. The fabric itself is very similar to Tyvek. At first it may feel a bit stiff, but just use it a couple of nights and it will soften up and I find it's actually a nice fabric feel once it does. I have also machine washed this and the Escape Bivvy Light and they come out fine. The reflective side doesn't seem to flake off and is also long lasting. It may lose a bit of it's reflective value over time, but that's over a long period of use. The price made me hesitate to buy for a while. But after my experience I do not hesitate to recommend it and I will definitely buy another if this one ever gets damaged or lost. I think these should be essential items in every car, for every person, in every bug out bag, in every hikers backpack.I have the Escape Bivvy light in orange, but I really wanted something that didn't stand out so much. So I got this Escape Bivvy in green, and relegated my orange Escape Light to my car. The fabric is noticeably stiffer and feels like it will be more durable than the light version, although I have used my Escape Light for years and never had a tear or puncture. At first I thought it might be too stiff, but after a couple night's use it has softened up. While you could put a very light sleeping bag inside it, it would be a tight fit. What I do, and find it works better, is that I use this as a liner to my sleeping bag, and put it inside. That way this bivvy is closest to my body and reflecting that 80% of my body heat back to me first thing, then the sleeping bag is an insulated layer outside it to catch and retain what body heat escapes the bivy as well as insulating from outside cold.I did an experiement the past two nights since the temperature has been pretty stable. First I slept in my Helikon-Tex Swagman roll, and slept on the coldish side, but still within my comfort range, until early morning when the cold woke me. Our body temp naturally dips at some point early morning, which I think also coincides with the lowest air temp at night. I had to put my quilt inside the swag roll to get back to sleep. Last night, with the same base layers, I used this Escape bivvy sack inside my swag roll and slept toasty warm all through the night. I was not too hot, bu much warmer than the night before. It makes a huge difference. It packs down so small, and is so light weight there is no reason not to bring it. I think it should be in every backpack, every bug out bag, every car.If the weight is an issue, try the Escape Bivvy Light, it's a little less durable, but I've been using it for years and it's never torn or punctured, but I don't put it directly on the ground.

This is a useful bivvy but better for skinny people than for broad-shouldered people like me. While it is not as warm as a Mylar emergency blanket, it is also a lot quieter, and it *breathes*, maybe its best selling point. I've used this bag many times and only in warm conditions did I feel any indication of moisture condensation inside the bag. I'm not talking droplets here, but just a tiny bit of dampness as I run my hand along the inside of the bag. Let it air out for three minutes and you're good to go. The height of this bag is perfect for me, and I'm 6' 1" and 190 lbs. The width though--it's just unacceptably tight for me. I used the RevHiker method (see his Youtube video "SOL Escape Bivvy Mod For Big Guys") for expanding this bag to a full 40 inches at the neck, which is more than enough for me. After the modification, the bag was not as warm, but again, the warmth was never the biggest selling feature of this bag. This is a very good bivvy for the money, but if you are broad at the shoulders, you'll want to add some width to it.

The last time I went camping with a tarp I learned that when the wind shifts and it starts to blow into you just a sleeping bag won't do. The breeze blew through the fabric of my supposedly 45F sleeping bag (30.15oz) and I was extremely cold when the temperature dipped to 55F even sleeping with full pants and a fleece on. I used a Thermarest SOL-Lite sleeping pad, the same as in this latest trip. I knew I needed something windproof to help out and purchased this.At first I wondered if this was really only meant for temporary use and for only emergencies like their emergency bivy bags. Then again with the price and many reviews from people that used it for longer trips I thought it would be durable enough so gave it a shot. At 8.2oz total it is extremely light. My home was 59F one day so I laid down on the rug in just this bag in a t-shirt and boxers and after over 10 minutes I was still kind of cold. By itself it was OK but not the best. I then decided to try it with a Sea to Summit Reactor Plus (8.65oz http://smile.amazon.com/Sea-Summit-Reactor-Compact-Thermolite/dp/B0045IDL4K/ref=pd_sim_sg_3?ie=UTF8&refRID=0EJGX1YJGQHG1HFNGH1Q) inside it. Sure, the bag liner is kind of thin so I didn't think much of it but 10 minutes in and I was nice and toasty! It's not the easiest to get into but overall it worked incredibly well. This last trip I brought along my sleeping bag as well but I slept in just the liner and this bag. When I went to bed it was in the upper 60s and I was a little too warm but I knew it was going to get into the low 40s so I dealt with it. Late at night I woke up because of the cold but then I cinched up on the drawstring which closed off the gap above my shoulders and it sealed off the warmth and I was warm enough to go back to sleep. Now that's low 40s with 16.85oz of weight providing more warmth than my 30oz sleeping bag!!Just don't jerk the opening too hard or too often and it should last. I am slightly worried that the silver lining inside may get wrinkled over and over and create a lot of cracks which may slowly lose its effectiveness but I'm not sure if that's true or not. However with this bivy you can enjoy protection from the wind and a fair amount of protection from bugs and what not if you use a insect hood. Now, as the description says it is water resistant but not waterproof so be aware of that. It is not wrinkly sounding at all nor does it feel like plastic like mylar does. I am definitely taking this on my next trip out. My only question is is it spelled bivvy or bivy?