curt-
I could not tell you as I do not have anecdotal evidence on hand beyond days on water. However, I will say that the Sonic Pro will be a much different fit than the current CPX. The current CPX's tend to run fairly baggy compared to other bands. This pug leg factor increases the wear dramatically on the inner leg and seems and can reduce life.
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Ryan S. Petzold
aka Sparkey and/or Special