Standard Test Method for Measurement of Sleeping Bags

SIGNIFICANCE AND USE
In this context, this test can be used for specifications, design, and quality control. Girth in and of itself is not to be used to predict the thermal properties of a sleeping bag.
SCOPE
1.1 This test method determines the internal girth, the internal length and width, and the external length and width of a sleeping bag under a standardized measurement method.
1.2 The measurement uses a physical measurement method applicable to any location where a flat level surface is provided.
1.3 The values stated in inch-pound units are to be regarded as standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Publication Date
30-Apr-2012
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ASTM F2568-06(2012) - Standard Test Method for Measurement of Sleeping Bags
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2568 − 06 (Reapproved 2012) An American National Standard
Standard Test Method for
Measurement of Sleeping Bags
This standard is issued under the fixed designation F2568; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Themeasurementsintroducedinthistestmethodarefortheinternalgirth,internallengthandwidth,
and external length and width of sleeping bags.
The external length and width measurements or internal length and width measurements apply to
length and width measurements required for standardized Bedding Labels.
The “girth” (that is, internal circumference) of a sleeping bag refers to the total internal
circumference at specific longitudinal measurement points of a closed sleeping bag. It is a physical
dimension/measurement used for specifications, design, and quality control. Girth in and of itself is
not to be used to predict thermal properties of a sleeping bag.
1. Scope 2.1.4 head, n—that end of the sleeping bag designed for the
head and neck of the human body.
1.1 This test method determines the internal girth, the
internal length and width, and the external length and width of 2.1.5 length—see below:
a sleeping bag under a standardized measurement method.
2.1.5.1 Option 1—external length, n—of a sleeping bag,
greatest external distance from the head to the foot as measured
1.2 The measurement uses a physical measurement method
down the centerline of the sleeping bag and parallel to the
applicable to any location where a flat level surface is
plane of the surface of the measurement apparatus while the
provided.
sleeping bag is in a relaxed state.
1.3 The values stated in inch-pound units are to be regarded
2.1.5.2 Option 2—internal length, n—of a sleeping bag,
as standard.
distance from the liner/shell seam at the head of the sleeping
1.4 This standard does not purport to address all of the
bag to edge of the zipper coil at the foot of the sleeping bag as
safety concerns, if any, associated with its use. It is the
measured parallel to the centerline of the sleeping bag and
responsibility of the user of this standard to establish appro-
parallel to the plane of the surface of the measurement
priate safety and health practices and determine the applica-
apparatus, while the sleeping bag is open on a flat level surface.
bility of regulatory limitations prior to use.
For a mummy sleeping bag this measurement is not possible;
use Option 1.
2. Terminology
2.1.6 sleeping bag, n—structure made of down, synthetic
2.1 Definitions:
fiberfill, shell fabrics, or other materials, or a combination
2.1.1 bookends, n—two moveable panels on the external
therof, that are designed for people to use for thermal protec-
measurement apparatus that slide in and out on the two axis of
tion when sleeping (for example, outdoors, tent, cabin).
the sleeping bag.
2.1.7 walls, n—stationary sides along the length and width
2.1.2 foot, n—that end of the sleeping bag designed for the
of the apparatus.
foot of the human body.
2.1.8 width—see below:
2.1.3 girth, n—total internal circumference of a closed
sleeping bag as measured while the bag is lying flat on a flat
2.1.8.1 Option 1—external width, n—of a sleeping bag,
level surface.
greatest distance from one external edge to the opposite
external edge, as measured perpendicular to the axis created by
the length and parallel to the plane of the surface of the
This test method is under the jurisdiction of ASTM Committee F08 on Sports
measurement apparatus, while the sleeping bag is in a closed,
Equipment, Playing Surfaces, and Facilities and is the direct responsibility of
Subcommittee F08.22 on Camping Softgoods.
relaxed state.
Current edition approved May 1, 2012. Published August 2012. Originally
2.1.8.2 Option 2—internal width, n—of a rectangular sleep-
approved in 2006. Last previous edition approved in 2006 as F2568 – 06. DOI:
10.1520/F2568-06R12. ing bag, distance, divided by 2, from the edge of one zipper
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2568 − 06 (2012)
coil to the opposite zipper coil edge, as measured perpendicular 5. Conditioning
to the axis created by the length and parallel to the plane of the
5.1 The sleeping bag must be conditioned before any
surface of the measurement apparatus, while the sleeping bag
measurement is made.
is open on a flat level surface. For a mummy sleeping bag, the
5.2 Remove the sleeping bag from the stuff or storage sack
girth measurement divided by two.
and unzip the bag completely.
3. Significance and Use
5.3 Shake the bag ten times.
3.1 In this context, this test can be used for specifications,
5.4 Lay the bag flat for 24 h.
design, and quality control. Girth in and of itself is not to be
used to predict the thermal properties of a sleeping bag.
6. Procedure
6.1 Girth and Internal Width Measurements:
4. Apparatus
6.1.1 For Girth Measurement, place the conditioned bag,
4.1 Four-Way Rule (for girth measurements)—A measuring
open, on a l
...

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