I'm sorry, but I can't accept that much responsibility. I'm 5'8, guy, pretty average build, and the NextLevel 6210 comes about mid biceps, and probably an inch or so below my belt line. It fits me great.

There are decent enough sizing charts on the site, IIRC. I'm the kind of guy who buys the same shoe for the past 25 years, so when I find something that works, that's it, forever.