Most Dainese gloves we’ve carried run snug like other European brands, but this particular style seems to run “normally” like other US brands. So choose the size you normally wear.
I notice the finger length on this style is longer than most gloves I try on in the course of doing reviews. They aren’t freakishly long, but worth a mention. If you have average to longer fingers, you’ll like this one, but those with stubby fingers might not.
Hopefully you’ve had some experience with buying gloves and can choose based upon the fit of a previous pair. If you have no previous experience with glove sizing, go here for help.