Replying to Oakley Great Ascent Sizing

I'm getting that jacket from oakley, but I'm not sure at all about what size will fit me the best.
I'm 1,75m (like 5' 8"), my chest perimeter's around 105cm (40"), and 90cm (35") on my waist.
Oakley size chart says this:

L   - Chest: 42″ - 44″ / 106,68 - 111,76 cm /// Waist: 34″ / 86,36 cm
XL - Chest: 46″ - 48″ / 116,84 - 121,92 cm /// Waist: 36″ / 91,44 cm

And that explains my problem. I don't want it to be too loose, but of course neither too skinny. Maybe the difference is not that big, but man, wasting money's not cool.
L is my size for Armada regular fit, so I tend to think so does for Oakley sizing...

If some of you guys ride or have tried it, please give me some advice.