A sleeping bag is a bag for sleeping in outdoors that has insulating layers to keep the user warm. It balances warmth, weight, and comfort. Sleeping bags evolved from earlier blankets and bags and now come in various shapes, materials, and temperature ratings. Key factors to consider when selecting a sleeping bag include the intended temperature range, insulation type, weight versus roominess, and additional features.

1. SLEEPING BAG
HEMANT KR SHARMA,NDRF

2. SLEEPING BAG
• A large bag for sleeping in outside that
has layers
of material to keep
you warm in cold weather. that is warm
but light in weight.
• It is a bag with the perfect balance
between warmth , weight & comfort.
However it is little bit expensive.

3. HISTORY OF SLEEPING BAG
• The "Euklisia Rug", from Ancient Greek
and (cot, sleeping-place), patented by
mail-order pioneer Pryce-Jones in
1876 is considered by many to have
been the first forerunner of the modern
sleeping bag. Pryce-Jones, a Newtown,
Montgomeryshire Welsh entrepreneur
developed the bag and exported around
the world in the late 19th century.

4. Contd..
• Documents show he sold 60,000 of
these rugs to the Russian army -
and the British army also bought
them. There are records of civilian
uses too - among missionaries in
Africa and pioneers in the Australian
outback.

5. Contd..
• A three-person buffalo
sleeping bag used during
Arctic exploration
circa 1880

6. Contd..
• Russian sleeping bag used in space
station Mir and International Space Station.

7. Contd..
• Many insulating materials are available for
sleeping bags. Inexpensive sleeping bags for
warm weather use or use by children indoors
typically have a layer of synthetic quilt insulation.
Outdoor professionals and serious amateur
adventurers usually prefer either synthetic fill
(e.g. PrimaLoft), or natural fill (e.g. down), and
they have debated the merits of these materials
for years.

8. Contd..
• Synthetic fill does not readily
absorb water, dries easily, and
provides some warmth even when
thoroughly soaked. These properties
may save the owner's life if, for
example, the sleeping bag is
accidentally dropped into water on a
cold day. Synthetic material is also
firm and resilient, so it insulates well
even underneath a person's weight.

9. Contd..
• On the flipside, synthetic fill cannot be
compressed as much as down and it
weighs more, causing such bags to
take up more space and weight when
not in use. Furthermore, synthetic
insulation tends to break down faster
than its natural counterpart.

10. Contd..
• Other materials, notably cotton and wool,
have also been used for sleeping bags.
Wool repels water nicely and also resists
compression, but it weighs much more
than any alternative. Cotton suffers from
high water retention and significant
weight, but its low cost makes it an
attractive option for uses like stationary
camping or car camping where these
drawbacks are of little consequence.

11. Contd..
• Cotton insulation does not provide
warmth if it becomes wet (due to
the sleeping bag falling into water),
so cotton-insulated sleeping bags
are not used by professionals or
serious hikers.

12. TYPES OF SLEEPING BAG
• Square Sleeping Bags-
Square sleeping bags are the
most basic of sleeping bags.
These give you room to move
your feet if you don't like to feel
constricted in your sleep. Square
sleeping bags, in some cases,
can be doubled up (or come in
double size) if you wish to sleep
next to your partner

13. Mummy Sleeping Bag
• Mummy shaped sleeping
bags are tapered at the
bottom to help keep warm
air inside and close to your
body, without circulating
and cooling down. They
can range from single
season use right up to
thick expedition sleeping
bags, designed for use in
sub-zero temperatures.

14. Sleeping Pods
• Sleeping Pods are
exclusive to GO
Outdoors. They are half
as wide as they are
long, letting you move
freely inside, making
them ideal for people
who like to toss and
turn in their sleep.
Perfect for sleepovers
or summer use.

15. Indoor sleeping bags
• Indoor sleeping bags, sometimes
called slumber bags, are widely
available, often for use particularly by
children. These are usually not designed
to be weatherproof and are often made of
natural fabrics instead of the synthetic
fabrics commonly used for outdoor
sleeping bags. Children's sleeping bags
in particular often feature elaborate,
brightly colored printed designs, such as
images of popular media characters.

16. Contd..
Slumber bags make
floor sleeping more
comfortable, and are
often used
for sleepovers, family
visits, and other
situations where there
are not enough beds
for everyone.

17. Infant use
• An infant sleeping bag is a
bag-like garment or covering
worn by infants for sleeping
in. Infant sleeping bags differ
from regular sleeping bags in
design and purpose, being
designed primarily for indoor
rather than outdoor use, and
usually featuring either arm
holes or sleeves.

18. Contd..
• The definition used in the British
Standard for safety of children's
sleep bags is "sleep bags for the use
of children with a minimum weight of
4 kg designed to provide sufficient
warmth so as to remove the need for
additional bedding when sleeping in a
cot or similar product in which a child
is contained.

19. Contd..
• " It goes on to exclude
"garments with sleeves and
feet, i.e. sleep suits or baby
grows, or to products
designed primarily for outdoor
use or to keep children warm
when in a pushchair

20. European standard of sleeping bag
• The testing of sleeping bags
suitability is carried out according to
this standard. Tests are carried out
using human-like thermic figurine
(dummy) that sends signals about
temperature changes of particular
body part.

21. Terms of standard
• Standard thermal insulation
• Temperature model
• Artificial ground
• Climatic chamber
• Test and sample stage--Test is made on
sleeping bag with no previous treatment.
Before the test, sleeping bag is adapted to
surrounding test conditions; the adaption
must last at least 12 hours.

22. RATINGS OF SLEEPING BAG
• upper limit is the highest temperature
at which a 'standard' adult man is able
to have a comfortable night's sleep
without excess sweating.
• comfort rating is based on a 'standard'
adult woman having a comfortable
night's sleep.

23. Contd..
• lower limit is based on the lowest
temperature at which a 'standard' adult
man is deemed to be able to have a
comfortable night's sleep.
• extreme rating is a survival only rating
for a 'standard' adult man. This is an
extreme survival rating only and it is not
advisable to rely on this rating for
general use.

24. Contd..
• The transition zone, in between
the comfort and lower
temperature, is usually
considered as the best purchase
guideline.

25. Temperature ratings
• Bag Type Temperature Rating (°F)
• Summer +32° and higher
• 3-Season +10° to +32°
• Winter +10° and lower

26. Contd..
• There is no standard measurement rating in
the U.S., so a 20° bag from one company may
not provide the same warmth as a 20° from
another company. Other important variables
include what the user plans to wear while
sleeping, what type of sleeping pad is used,
and how well the user holds heat in the bag.
• It has been shown that moisture (either
externally, or from sweating) severely
decreases the insulating effect of sleeping
bags.

27. KEPT IN MIND WHEN YOU SLECT
SLEEPIN BAG
• Temperature
rating: Choose a
sleeping bag rated for
the typical temperature
range you plan to
backpack in. You can
always add a liner for
warmth or unzip the bag
if you’re too warm.

28. Contd..
• Type of insulation:
Choose from down,
synthetic or a
combination of the two.
Each type of insulation
has its pros and cons.

29. Contd..
• Weight vs. roominess:
When backpacking, you want
to keep weight low. For some,
low weight overrides
roominess. For others, having
a roomy bag for a good night's
sleep is worth a few more
ounces.

30. Contd..
• Features: Consider the extras that make your bag
work best for you, including types of zippers, draft
collars, hood styles and more.
• Shop sleeping bags
•