ISO 13998:2003 is applicable to protective aprons, trousers and vests for use with hand knives, and to other garments which provide similar protection to parts of the body in accidents. It specifies requirements for the design, penetration resistance, cut resistance, sizing, ergonomic characteristics, innocuousness, water permeability, cleaning and disinfection, marking and information to be supplied by the manufacturer for users of protective aprons, trousers and vests. It also describes the classification of protection levels and appropriate test methods.