This part of EN 12402-5 specifies the safety requirements for buoyancy aids with a buoyancy of no less than 50 N that are used in sheltered waters with rescue personnel close by and under circumstances in which bulkier and buoyant devices could impair the user.
EN ISO 12402-5 - PERSONAL FLOTATION DEVICES - PART 5: BUOYANCY AIDS, PERFORMANCE LEVEL 50 - SAFETY REQUIREMENTS
(EN ISO 12402-5 supersedes EN 393.)
EN ISO 12402-5 explained
These specifications apply to buoyancy aids used by adults and children who are conscious and competent swimmers.
