Purchased at Yohji Yamamoto in Nihonbashi Mitsukoshi Main Store. Size 1 (probably one size fits all?) Of course, it's black. It has a "B" label. It's a very cool pair of pants with studs (dangling on the left back). The front is apron-style? The size seems suitable even for slim men. I'm short and it doesn't suit me, so I'd like to pass it on to someone who can wear it well. The fabric is quite thin. 100% Tencel.