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What's the buoyancy in this MSR-alike?
I find the trim-pillow, I can only take 3x AL80 (3mm wet). Got an MSR for 4x AL80, but generally use my Z-Trim clone for 4+
How old is the 3mm? I can take 4 AL80s with a 1mm wet in salt water. It's fully inflated when I begin the dive and pretty close to fully deflated at the end.