# 🔥 How effective is the S.O.L. Emergency Bivvy at retaining body heat?

*Published: 2024-10-23 | Updated: 2024-10-25 | Source: https://shopsavvy.com/answers/how-effective-is-the-s.o.l.-emergency-bivvy-at-retaining-body-heat*

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## Product: S.O.L. 90% Reflective Lightweight Emergency Bivvy
**Brand:** ‎S.O.L. Survive Outdoors Longer

The S.O.L. Emergency Bivvy is pretty solid at keeping you warm when you're caught in an unexpected situation. Based on our research, it reflects up to 90% of your body heat, which can be a real lifesaver. It's made from lightweight, tear-resistant polyethylene, so it's a popular pick for survival kits and emergency packs.

The manufacturer describes it as an essential tool for sudden weather challenges and it offers protection against wind, rain, and snow. But, there's a bit of a catch—you might notice condensation building up inside because it's not really breathable. If you're using it for a while, especially in the cold, it can get damp and that might affect how warm you stay.

According to our research, a lot of folks like how easy it is to carry and set up, making it a good quick shelter in emergencies. Just keep in mind, it's probably best for short-term use. If it's super cold or if moisture is a major issue, it's not ideal to rely on it alone like a sleeping bag. Instead, it's best when paired with a sleeping bag or extra layers for insulation.

If you're heading into really cold places, combining the bivvy with other gear can help tackle the condensation problem and boost warmth. That's especially true for those who are big on survival strategies. 

So, while it's fantastic for emergencies and those surprise overnights outdoors, think of it as an important part of your gear setup rather than the single solution in harsh conditions. Its lightweight nature and ability to keep you warm, especially when used smartly with other layers, make it a valuable part of your emergency kit.

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*Where this comes from: This answer is based on ShopSavvy's product database, real-time pricing from thousands of retailers, and analysis of user reviews to give you a well-rounded picture.*