I just hand-washed it in cold water with soap, zero chance it will ruin anything, so it turned out just fine. You can even wash leather with cold water so no option safer than that. The fabric is pleasant, it's matte velour, sorta.
Thanks for resurrecting the thread btw, I didn't want to blogpost any more but your bump now justifies it, as I had a bit of luck recently (too early to tell though, it didn't arrive yet so who knows what I'm in for).
I have made more drunk orders, a silk bomber and two pairs of jeans, one of them is my literal holy grail I've been looking for for the past four years. Pic 3 is what some guys who have a brand new pair ask for, pic 4 is my babushka find. Compare the prices.
You won't believe how much of a big deal it is to me. Can't wait for it to arrive. I will shake as I open the box, to me it's like the first Rolex to a watch enthusiast, like a vasectomy coupon to a nintendo fan, like an MRE with cigarettes to Steve, like a Hitler post mark to a philatelist (ok bad example they're fairly cheap and commonplace).