Hi,
I've got the possibility to buy a nearly new golite jam2 but don't know if the size is right. I've read a couple of times on the forum that sizing up is in order, but have some doubts as my size torso hasn't been mentioned before.
I'm 5'11 with an aprox. 17.5 inch torso (closer to 17 than to 18). I use a granite gear vapor trail regular, but i've noticed it has a small gap (very minor) between the shoulder straps gap and my back, it's a touch to big for me.
Would a jam2 M be the way to go or go for the L ?
Thanks for any help.

