No! This jacket isn't or better isn't ONLY designed for work. This jacket is cutted as comfortable to be perfect for changing tyres, for pitching a tent or just for looking great while hitchhikin' to the next motel with your chick.
It looks cool and of course even presentable - just the perfect jacket for all opportunities.
The respective sizes of this jacket turn out to be normal. You can find exact measurements at the size guide.
Be prepared for a new kind of rockin' jacket!