I'm 6foot 200-210lbs with a strong phyzeek with some small love handles so I can look pretty dang good in a medium shirt if I suck in a little bit but a large fits on me with room to relax while still feeling like It wasn't oversized, considering I don't want tight as heck riding gear I chose a large at 1st, comments mentioned the hoodie is fitted towards the bottom and doesn't take into consideration the back plate dimensions, so I took a shot with ordering XL (1 size up from my relaxed fitting shirts instead of my showy fitted mediums) feels perfect after I tried it on, I feel the littlest bit of room on my back which should be enough to comfortably fit the back plate but it'd be just fine without the plate, fit wise, everything else fit just right, dress for the slide, this looks dope and can provide great back protection if you can afford the back protection aswell,