Hiking Camping Gear Store :: Camping Tents :: Bivvy
Bivvy for Solo Hikers only
A bivvy is made for the hardcore solo hiker who loves to travel light (usually weighing a little bit more than 1 lb). Now with Gore-Tex bivvies, or bivouac bags (sacks) as some call it, can now breathe. They're not just popular with solo hikers but also with fishermen (coarse fishing and large carp fishermen) who want some protection from the elements and they're effective as a barrier against wind and rain.
Bivvy
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Advanced Bivy
Outdoor Research Advanced Bivy. Specifications: Avg. weight: 39.0 oz./ 1106 g Avg. weight w/o...
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Adventure Medical Heatsheets Emergency Bivvy Sack
This bivvy sack packs to the size of a fist and only weighs 3.5oz. It's so light that...
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Adventure Medical Kits Thermo-Lite 2 0 Bivy
This 6.9oz. emergency bivy is the #1 selling survival item from Adventure Medical Kits. The...
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Alpine Bivy
The Alpine Bivy by Outdoor Research. Specifications: Avg. weight: 32.0 oz./ 907 g Avg. weight...
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Aurora Bivy
Outdoor Research Aurora Bivy (Fall 2008) The Aurora Bivy by Outdoor Research. Specifications:...
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Bibler Big Wall Bivy
Bibler Big Wall Bivy. Compact, ultralight, stormproof bivy sacks, Hooped Bivys by Black Diamond...
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Bibler Bipod Bivy
Free Shipping. Bibler Bipod Bivy (Fall 2008) A stormproof bivy with headroom, the Bipod Bivy by...
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Big Agnes Three-Wire EVENT Bivy
It only weighs 2.6 pounds yet the Big Agnes Three-Wire eVent Bivy can provide you shelter in a...
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Black Diamond Hooped Bivy Sack
Free Shipping. Compact, ultralight, stormproof bivy sacks, the Hooped Bivy Sack by Black Diamond...
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Black Diamond Lightsabre Bivy
Free Shipping. The Lightsabre Bivy by Black Diamond includes a foot pole to keep the canopy off...
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Black Diamond Tripod Bivy
Free Shipping. Black Diamond Tripod Bivy for comfortable bivying in harsh alpine environments,...
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Black Diamond Winter Bivy
Free Shipping. Black Diamond Winter Bivy. A cold-weather Superlight bivy sack, the versatile...
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A bivy sack at its barest is a thin waterproof fabric shell (for example, made from lightweight silnylon) designed to slip over a sleeping bag, providing an additional 5 to 10 °F of insulation and forming an effective barrier against wind chill and rain. A drawback of a simple bivy sack is the humidity that condenses on the inner side leaving the occupant or the sleeping bag moist. This problem has been alleviated somewhat in recent years with the advent of waterproof/breathable fabrics, such as Gore-Tex or Pertex Quantum, which allow some humidity to pass through the fabric while blocking most external water. Another solution is the use of an inner vapor barrier liner bag, for example a silnylon sack, to prevent body moisture from entering and condensing in the sleeping bag.
A traditional bivy bag typically cinches all the way down to the user's face, leaving only a small hole to breathe or look through. More recent developments in high-tech breathable fabrics have resulted in the creation of Gore-Tex Exchange Lite, an air permeable version of the fabric which can be safely zipped up around the user's head in order to shut out the elements completely. The fabric not only allows moisture to escape, but also the carbon dioxide exhaled by the user.
Bivouac shelters
Nowadays there also exists the bivouac shelter or "bivy shelter", a compromise between a bivy sack and a single-person tent. Often employing hoops over the head and feet, a bivy shelter is held sufficiently taut to keep the fabric off the occupant inside in order to prevent condensation from soaking into bedding. This style of shelter also provides some additional breathing room around the head.
Many campers gladly accept the increased carrying weight of a bivy shelter for the claimed increase in comfort it affords. However, the traditional bivy sack still holds its place among mountain climbers and backpackers, and is frequently carried on long or dangerous hiking or hill walking expeditions and high mountain climbs as a compact emergency shelter.
Popularity
In the UK, bivy shelters have become very popular amongst coarse fishing and large carp fisherman, who, in pursuit of their quarry, fish throughout the night. This upsurge in popularity has increased competition amongst manufacturers and designs have become more advanced.
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