ISO 21924-9:2020

INTERNATIONAL ISO
STANDARD 21924-9
First edition
2020-01
Martial arts — Protective equipment
for martial arts —
Part 9:
Additional requirements and test
methods for Wushu Sanda head
protectors
Reference number
ISO 21924-9:2020(E)
©
ISO 2020

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ISO 21924-9:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
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ISO 21924-9:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Structure . 5
5 Requirements . 6
5.1 Size and dimensions . 6
5.2 Materials . 7
5.2.1 Fabric . 7
5.2.2 Lining . 7
5.2.3 Padding . 7
5.3 Sewing . 7
5.4 Appearance . 7
5.5 Quality requirements . 9
5.5.1 Safety requirements . 9
5.5.2 Physical and mechanical properties . 9
6 Test methods .10
6.1 Measurements and dimensions.10
6.2 Inspection of sewing and appearance .10
6.3 Inherent quality test .10
Annex A (normative) Test methods of impact performance .13
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ISO 21924-9:2020(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 83, Sports and other recreational facilities
and equipment, Subcommittee SC 6, Martial arts.
A list of all parts in the ISO 21924 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
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ISO 21924-9:2020(E)

Introduction
Wushu Sanda, an important component of Chinese Wushu (martial arts), is a sport of one-on-one
combat involving kicking, striking, wrestling, etc. As attacks to the head and main body are allowed in
combat, head protectors are adopted to protect the head and to reduce injuries.
Though Wushu Sanda head protectors are sold and used all over the world, they vary considerably in
quality. As no standard has been established to prescribe relevant requirements, the inconsistency in
production processes and quality inspections have become the main constraint on the development of
this product.
The establishment of this document provides a technical guideline for manufacturers and consumers,
and will help to standardize the production and quality control of Wushu Sanda head protectors to
further promote international trade and Wushu Sanda and to safeguard the interests of consumers.
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INTERNATIONAL STANDARD ISO 21924-9:2020(E)
Martial arts — Protective equipment for martial arts —
Part 9:
Additional requirements and test methods for Wushu
Sanda head protectors
1 Scope
This document specifies the terms and definitions, product structure, classification, requirements and
test methods of head protectors for Wushu Sanda.
This document is applicable to Wushu Sanda head protectors sewn with polyurethane (PU) synthetic
leather, polyvinyl chloride (PVC) artificial leather, foamed plastic products and other materials.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 105-E04, Textiles — Tests for colour fastness — Part E04: Colour fastness to perspiration
ISO 105-X12, Textiles — Tests for colour fastness — Part X12: Colour fastness to rubbing
ISO 1856, Flexible cellular polymeric materials — Determination of compression set
ISO 2439, Flexible cellular polymeric materials — Determination of hardness (indentation technique)
ISO 3071, Textiles — Determination of pH of aqueous extract
ISO 3377-1, Leather — Physical and mechanical tests — Determination of tear load — Part 1: Single edge tear
ISO 4045, Leather — Chemical tests — Determination of pH and difference figure
ISO 8307, Flexible cellular polymeric materials — Determination of resilience by ball rebound
ISO 11640, Leather — Tests for colour fastness — Colour fastness to cycles of to-and-fro rubbing
ISO 11641, Leather — Tests for colour fastness — Colour fastness to perspiration
ISO 13937-2, Textiles — Tear properties of fabrics — Part 2: Determination of tear force of trouser-shaped
test specimens (Single tear method)
ISO 14184-1, Textiles — Determination of formaldehyde — Part 1: Free and hydrolysed formaldehyde
(water extraction method)
ISO 14362-1, Textiles — Methods for determination of certain aromatic amines derived from azo colorants —
Part 1: Detection of the use of certain azo colorants accessible with and without extracting the fibres
ISO 14362-3, Textiles — Methods for determination of certain aromatic amines derived from azo
colorants — Part 3: Detection of the use of certain azo colorants, which may release 4-aminoazobenzene
ISO 17226-1, Leather — Chemical determination of formaldehyde content — Part 1: Method using high
performance liquid chromatography
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ISO 21924-9:2020(E)

ISO 17234-1, Leather — Chemical tests for the determination of certain azo colorants in dyed leathers —
Part 1: Determination of certain aromatic amines derived from azo colorants
ISO 17234-2, Leather — Chemical tests for the determination of certain azo colorants in dyed leathers —
Part 2: Determination of 4-aminoazobenzene
ISO 17076-1, Leather — Determination of abrasion resistance — Part 1: Taber method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
Wushu Sanda head protector
protective gear to protect the head when practicing, performing or demonstrating Wushu Sanda
Note 1 to entry: See Figure 1.
Figure 1 — Wushu Sanda head protector
3.2
main body
part to protect the forehead and both sides of the head
Note 1 to entry: See Figure 2.
Figure 2 — Main body
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ISO 21924-9:2020(E)

3.3
protector of the back of the head
part to protect the back of the head
Note 1 to entry: See Figure 3.
Figure 3 — Protector of the back of the head
3.4
ear protector
part to protect the ears
Note 1 to entry: See Figure 4.
Figure 4 — Ear protector
3.5
locking strap
part at the bottom of the head protector as a component of the restraint system
Note 1 to entry: See Figure 5.
Figure 5 — Locking strap
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ISO 21924-9:2020(E)

3.6
hook and loop fastener
part at the back of the head protector as a component of the restraint system
Note 1 to entry: See Figure 6.
Figure 6 — Hook and loop fastener
3.7
top cover
part at the top of the head protector as a component of the restraint system
Note 1 to entry: See Figure 7.
Figure 7 — Top cover
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ISO 21924-9:2020(E)

4 Structure
The structure of a Wushu Sanda head protector is shown in Figure 8.
Key
1 main body 4 hook and loop fastener
2 ear protector 5 top cover
3 locking strap 6 protector of the back of the head
Figure 8 — Structure of Wushu Sanda head protector
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