Why do my hands get so cold so fast?

My hands seems to get extremely cold, to the point of numbness, in a matter or 10 minutes. However, this only happens when I'm snowboarding. I wear insulated gloves, but they still get cold. Yesterday, I was snowboarding and when I got to the bottom on my last run, I took my gloves off and my joints were pratically frozen. I've never experienced extreme numbness such as that. When they were thawing I cried, and they hurt so much that words can't describe. The soon warmed but, I just want to know if anything is wrong with me imparticular.