Hi,
I am 15 years old (will be turning 16 in 2 months). I am almost 5'10" and weigh 120 pounds. I am pretty small compared to most of the kids my age and only have 9.5" arms unflexed (it is closer to 10" when flexed). I was wondoring what the average arm size for 14, 15, and 16 year olds.