The only downside I've found is water can get trapped between the inner and outer bladder, but that's solved by inflating it all the way before you get out of the water.
I used mine at work all summer, logged over 100 saltwater dives on it and probably 500 hours in the sun on the boat, still looks brand new, works like it too.
Ben
I used mine at work all summer, logged over 100 saltwater dives on it and probably 500 hours in the sun on the boat, still looks brand new, works like it too.
Ben