CT-Rich
Contributor
The photo below shows a typical single tank wing (back inflate) design.
View attachment 402877
The design has a flat back section that attaches to a backplate. Surrounding that flat section is a donut shaped wing that envelopes the cylinder.
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Just for clarification,at no point does a back inflate wing "lift the cylinder away from you for comfort".
The major advantage of the typical wing is that can be removed from the back plate and be used on long flights as a hemarrhoid cushion.
If the jacket BCD is what you are used to and works for you (and is paid for...) I would not sweat the value difference in it versus a BP/W. It is six of one, half a dozen of another. If you you were researching the purchase, I have a back inflate and bought my daughter a jacket BCD. I like my SP Nighthawk, but every piece of gear is going to have its quirks, once you are used to it, there is likely to be no significant performance difference worthy of the hundreds of dollars to switch.
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