Have you tried on POW gloves before? I've noticed they seem to run a little small so I've had to bump up a size on my POW gloves/mittens over what I'd usually get with a Dakine/Burton/Drop glove.
17 Capita Kazu Kokubo Pro . 17 Korua Apollo . 17 Lib x Lost Mayhem Short Fat . 16 Never Summer Swift . 14 TJ Brand Retro Fish
17 Burton Malavita Wing . 16 Burton Genesis X
16 Flow Talon