Altura Jacket sizing

I know a few riders use Altura gear, i do but only have a few pairs of shorts.

How do their jackets size up, Larger, smaller? I have a 42″ Chest and I’m looking at the two sizes below and the jacket is the altura crossmax if anyone has one

L 40-42
XL 42-44

Ive got some money left in my Paypal account so it’l be off the net