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).

ISO draws attention to the possibility that the implementation of this document may involve the use of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s) which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.

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 137, Footwear sizing designations and marking systems.

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.

Introduction

Lasts are the base for footwear production. Standardization related to lasts can guide and regulate the design and production of lasts, thereby improving the fitting and comfort of footwear products.

This document includes partial information obtained from a survey carried out based on the Chinese population in relation to GB/T 3293, the Chinese standard on lasts, which has undergone two revisions and has been implemented for over 40 years.

This technical report not only allows footwear traders, manufacturers, and other stakeholders from various countries to understand the last system, but also strengthens communication and cooperation in the design and standardization of lasts.

1 Scope

This document contains the sizing of last systems for daily wear footwear including casual footwear, sports footwear and rain footwear.

2 Normative references

3 Terms and definitions

4 Classification

5 Last dimensions

5.1 Last dimensions measurement

5.2 Interval of last dimensions

5.3 Regular and variable reference dimensions

5.4 Back of last

5.5 Design allowance

6 Last systems

6.1 General

6.2 Last system for men footwear

6.3 Last system for women footwear

6.4 Last system for children’s footwear

6.5 Last system for professional sport footwear

6.6 Last system for rain footwear

6.7 Last system for safety footwear

Bibliography