RST Rider Dark CE Textile Jacket 2478 (Black) From  £80.99

Bought this jacket one size up (46)from my current R-16 size of 44, more or less same fit so if you're buying one they're a tight fit. Otherwise well made does the job & for that price can't go wrong.

I recommend getting a size up at least. I ordered a 38 as i would if i was buying a normal jacket. Unfortunately its short in the body and could do with an extra inch or two in the chest.
Other than that, its a fantastic jacket and i would swap it if i had kept the tags