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Thermal Bivvy

Adventure Medical Thermal Bivvy

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Choosing Bivy Sacks

A bivy sack is a low-profile, waterproof barrier for your sleeping bag that offers an ultra-lightweight alternative to traditional tents. Originally used by climbers who needed lightweight, compact shelters for multi-day ascents, they are also popular among backcountry minimalists who want to shave weight. They don't offer room to move, but they're easy to pack.

Structured Bivy Sacks
Structured bivy sacks, called bivy shelters, have small suspension systems that expand the head area to provide some room to sit up in. This makes the confined space more comfortable fit.
Related Content Leave Your Tent Behind: Alternatives to Traditional Camping
Bivy Openings
The most basic bivy sacks have an opening at the head to let you breathe and allow moisture to escape. More advanced models use mesh panels to keep bugs out.
Related Content How to Choose the Right Camping Sleep System
Bivy Fabrics
Most bivy sacks use two different fabrics to balance protection and weight. The bottom fabric is heavier for durability. The upper fabric is usually lighter and features a waterproof/breathable laminate.
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Play it Safe

Water Purifiers Explained

 

No matter how clear water in the wilderness may look, there's always a chance it's contaminated with microscopic organisms just waiting to treat you to a vicious bout of diarrhea and vomiting. Luckily, you can thwart those evil organisms' plans with a water purifier. Water purifiers work using a chemical, a filter plus a chemical element, or UV light to kill any bacteria, protozoan, and viruses that might be lurking in the water. Whether you're backpacking in Appalachia or traveling through a third-world country, there is a safe and convenient water purifier option that will work for you.

Water Purifiers:

Water purifiers use either a filter and chemical combo or UV light to kill any contaminants in the water without significantly altering the water's taste. They are expensive, but effective against viruses that filters miss.

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Purification Tablets:

Cheap, small, and effective, purification tablets are another way to ensure your water is safe. They noticeably alter the water's taste and require wait time, but are great as a minimalist option or an emergency backup.

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