these be heavy duty , thick glove . some user may be use to \/ prefer they glove on the thinner side . thankfully , I read some review and actually measure my hand in the manner recommend by the manufacturer prior to order . base upon a old pair of glove I have my first instinct be to order a size medium . base upon Harbinger 's size guide , I be right on the break between size large and x-large . base upon reviewer comment , I go with the x-large size . and , I be glad I do . they fit very snugly and I can not imagine the large size would even fit I .