Gary Mitchell wrote:

Yeah, like ObiWan said, denim works ...old timer. 
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The word you're looking for is "classic." Or "wise one."
ObiWanShinobi wrote:

Denim jacket should suffice.
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Yeah, that sounds good.
captcalhoun wrote:

so, which are you referring to?
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Based on those pictures, denim; but a bit of quick Googling tells me that denim, dungaree and jeans are used pretty much interchangeably. So "denim jacket," "dungaree jacket" and "jean jacket" are all technically okay. But "jean jacket" still sounds stupid to me. Or like a David Bowie song.
Nerys Myk wrote:

Where I'm from we call the second one overalls.
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According to wiki, in England the word "dungarees" refers to something like overalls.