Sleeping Bag Buying Gear Guide
The Right Sleeping Bag
bags widen sharply at the shoulders than taper down the sides to your
feet, hugging your body. The
primary advantage of the mummy bag is itís very design.
Be removing the unused space around your body, you have to keep a
smaller area warm, and by fitting around your head (and a good bag will
have a hood, more on this later) it is less likely to let in a blast of
cold air if you roll over in your sleep.
Also because of its shape the bag uses less material and less
fill that means it is lighter. If you are of average build and donít thrash around in your
sleep, a mummy style bag should be your first choice. If
you winter camp or plan extreme mountain excursions, the mummy bag
should be your only choice.
over for John Wayne, the rectangular sleeping bag is what most of us
used as kids when growing up and what the cowboys used in the Spaghetti
Westerns of the 1960íies. Basically
squared off on each corner the bag when rolled out resembles a
rectangle. Because of their
larger size they tend to be heavier then their mummy bag counterparts.
Because of the extra space they are not as efficient in keeping
you warm. Roll over in the
middle of the night while sleeping and icy cold air can rush into the
bag. Further, you can move
around at night and find yourself laying on a freezing cold part of the
bag that hasnít had the benefit of your body warmth to keep that area
comfortable. Some folks who
are of very large frames like the rectangular bag so they can stretch
out. Further, it is much easier to
change your clothes inside a rectangular bag, where this can be a feat
of acrobatics in a mummy style bag. Also if youíre on a
budget, bargains can be found looking at rectangular bags.
bags, also called tapers and semi-rectangular combine mummy bags with
rectangular bags. Resembling
a rectangular bag, they may taper down slightly as they go toward the
feet and will have a rounded end. Like
the mummy bag the removed space means lighter weight and less wasted
area to keep warm at night. Like
a rectangular bag it offers more room for a person with a larger
frame. Usually weighing just a little more than a mummy bag, this
style offers a good comprise between price, weight and warmth.
& Bivy Sacks
and Bivy Sacks are used with a sleeping bag.
Overbags are used when additional warmth is needed, like during
extreme winter camping. Overbags can also be used in extremely
warm conditions as a light sleeping bag, when even the thinnest and
lightest bag will roast you alive in hot humid conditions.
may also be used to supplement the waterproof abilities of a sleeping
bag. Bivy sacks are
waterproof and made of a breathable material, a bivy sack is used when
sleeping under the stars, in extreme wet conditions, or winter camping.
Both overbags and bivy sacks (you may hear these terms
interchanged) increase the range of use of your bag, but cut down on how
well the materials breathe.