Jacket style BC buoyancy characteristics

[athigunk]

Hi, I have a question I could not find answer on Google, if you could please feel free to condemn me but don't forget to leave a link!

How much negative/positive are those rental jacket style BCs when fully deflated? I would think it is also depend on the brand, but I would like to know in general.

 

[marcin.a]

It varies a lot, but IMHO they are mostly positive between 0.5kg - 1, maybe 1.5kg (approx. 1 - 2lb, maybe 3lb). There are some neutral, but I have never seen one being negative by itself. Generally speaking the more sophisticated it looks the more inherent buoyancy I would expect.