BS EN ISO 20320:2020 pdf free.Protective clothing for use in Snowboarding - Wrist Protectors一Requirements and test methods. BS EN ISO 20320 1 Scope This document specifies the requirements and test methods for ergonomics, innocuousness, comfort/ sizing, restraint, ability to limit wrist extension and attenuate impact force on the palm as well as provisions for marking and instructions supplied by the...