Plastimo Inflatable Life Jacket

50N Buoyancy aid (ISO 12402-5).

No life jacket!
For practiced swimmers a short distance from the shore and near any helpers.
Not safe when unconscious.

100N Lifejacket (ISO 12402-4)

For users on inland and sheltered waters.
Limited safety if unconscious (clothing dependent).

150N Lifejacket (ISO 12402-3)

For use on all inland, open water or coastal waters.
Limited safety when using heavy and/or waterproof clothing.

275N Lifejacket (ISO 12402-2)

For users on the high seas with extremely harsh conditions.
Safe in almost all cases of unconsciousness, even with heavy and/or waterproof clothing.

Marine lifejacket (SOLAS - MED 96/98/EC)

At a minimum, according to SOLAS standards.

Block vest: 175N buoyancy.
Automatic inflatable life jacket: 275N buoyancy.

These vests are suitable for users on the high seas in extremely harsh conditions.
Use when unconscious, even with heavy clothing, is safe in almost all cases.