The original jacket was a Wilson's leather jacket, now Diane Widas has to commission new ones for the show because wilsons leather doesnt make it anymore and the original got torn to shred.
soulrevolver uses thin leather, the actual wilsons is thick.
Quote taken from an article about the show
"Diane Widas, the costume designer for Supernatural has confirmed that Dean’s coat is courtesy of Wilson’s Leather, a brand that began life over 110 years ago as Berman’s Leather and has since established a sound reputation over the generations. However, before you quickly head over to Wilson’s website, she’s also warned that they’ve now discontinued the exact type and that the onscreen original has also bitten the dust. Battling supernatural enemies is a dangerous and messy business and as such Jensen has worked through a number of replacement jackets during his time on the show, leaving Widas to routinely commission knockoffs to step in."