Personal floatation devices.
This part of EN ISO 12402-2 specifies the safety requirements for performance level 275 lifejackets.
EN ISO 12402-2: 275N - PERSONAL FLOTATION DEVICES - PART 2: LIFEJACKETS, PERFORMANCE LEVEL 275 - SAFETY REQUIREMENTS
(EN ISO 12402-2 supersedes EN 399.)
This applies to lifejackets used by adults and children; lifejackets that have a buoyancy of no less than 275 N for the average adult; lifejackets that are intended for use offshore, in extreme conditions, and in combination with heavy protective clothing; and those that are worn alongside bulky loads (e.g., tool belts).