i don't know if this helps at all, but i wear hatch shooting gloves (the shorties that look like the nomex ones, but made of kevlar) in a Large, nomex tanker and pilots' gloves in size 9 (i believe) and wear these oakleys (in black) size large. they are very snug, but have a little give in them if you wear them. also if you find them snug, i recommend washing in cold water and NOT machine drying. while wet, put them on and stretch them, then let them air dry. it loosened mine up a little.