2022UNE-EN ISO 23537-1:2022 Requirements for sleeping bags - Part 1: Thermal, mass and dimensional requirements for sleeping bags designed for limit temperatures of -20°C and higher (ISO 23537-1:2022)
2017UNE-EN ISO 23537-1:2017 Requirements for sleeping bags - Part 1: Thermal and dimensional requirements (ISO 23537-1:2016)