Again, CG type doesn't tell you much. Yes a rescue vest like the GJ is a type 5, but so is an inflatable fishing PFD. Type 5 just means it is a special purpose PFD, and type 3 is everything from a cheap ski vest at Walmart to high end paddling PFDs. Needs to be intended for paddling, and needs to cinch down at the bottom, below all padding/floatation.
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