Glove sizing measurements...Confused
 

Hi, I was just browsing the internet for new gloves and I am in a state of confusion. I want Dakine Bronco Gloves and I was looking at their sizing chart. The part I got confused is, the measurements. According to the Dakine Site , Size L is 21.5 to 24cm, in which 24 cm is just too unbelievable of a human hand. I have a tape measure and I am pretty sure it measures in centimeters. I measured my hand and I only had 8.5centimeters which is ridiculous. I noticed that on the left side of the measurement table (website) which measures in inches, measurement numbers matches correctly with my 8.5 hand in WHICH I measured with a centimeter measure tape. I don't get it...I think I am lacking some basic measuring knowledge here or maybe my measure tape measures in inches...but my measure tape says 2 meters so it has to be a centimeter tape.
Sorry for my stupidity:laugh:

it's circumference around the widest part of your hand, and the length of your hand from your wrist to the tip of your middle finger.

(the sizing chart also says circumference)