/fa/ - Fashion

I have an old big E Levi's jacket, it's corduroy.
The thing is like 20 inches across the shoulders. Probably around a 40 inch chest, I don't think I ever measured.
But the sleeves on this jacket fit me more like a shirt.
In fact, if I wear a long-sleeved shirt under it the sleeves of the shirt will probably poke out longer than the jacket.
Were jacket sleeves like that the style at the time or have they shrunk?
It seems really weird to me that it has too much shoulder and not enough sleeve.