hey sam. i am probably about ur size 5.6 155. I dont have the jaws but i do have the alpinestars GP Plus perforated one. and its very similar i have a size 40 US(50EU).
I recommend visiting your local motorcycle gear store and try jackets sizes. went i went I try the 42 US and it was a bit to big not very compressed and bit open in the bottom section.
40 was the right fit for me. but like i said try maybe a medium or small depends on your chest and arm length.
I recommend visiting your local motorcycle gear store and try jackets sizes. went i went I try the 42 US and it was a bit to big not very compressed and bit open in the bottom section.
40 was the right fit for me. but like i said try maybe a medium or small depends on your chest and arm length.