Help with choosing BPW lift

[Wibble]

Cool video where they pressurise neoprene on this page

Chamber Test - Wet

Chamber Test Seeing is believing!It’s easy to tell you that Wetwear NCN (nitrogen composed neoprene) is the best neoprene for divers. You may have already confirmed that elsewhere. There is nothing like seeing it for yourself We placed samples of the best neoprene grades for diving from major...

wetwear.com

Nice video.

Does raise the question... How come RubbaTex doesn't compress? Is it made using compressed nitrogen to resist the pressure; which is so clearly demonstrated on the other samples

 

[BlueTrin]

Nice video.

Does raise the question... How come RubbaTex doesn't compress? Is it made using compressed nitrogen to resist the pressure; which is so clearly demonstrated on the other samples

So I am not familiar with this material at all, I only posted that because I found it cool to see the neoprene become thinner under pressure visually.

If you google for “rubatex site:scubaboard.com” you can see a few old threads about it, but it seems that the material is just more rigid so it compresses less and leaks less air during compression (apparently this is why neoprene does not regain immediately its size when you surface)

This thread was interesting:

Best Wetsuits that keep their thickness

I have a cressi castoro 5mm that I've used for a couple hundred dives but is no longer a 5, it's a 3. Also have an aqualung 7mm, but seems like it's not cold enough for it yet here. Just wondering if there are some suggestions of brands or models that tend to keep their thickness longer. I've...

scubaboard.com

 

[drk5036]

I think 28 pounds would be completely fine. In the 7 mm you won’t need that much weight, and in a drysuit you have the suit as well for inflation. I actually use a 22 lbs wing even with my drysuit (only 8 or 10 L single tank tho, in temperate waters). I prefer the smaller wing not for how it feels in the water necessarily, but more for how easy it is to travel with. Either way you’ll probably be fine however.

 

[Bob DBF]

@Cheizz and @happy-diver covered most of my points. The additional buoyancy of the larger wing may come in handy if your buddy has a failed wing at depth, or any time one needs excess buoyancy.