Stefan Cooke - SS20 Machine A exclusive button bag strap. Grey & black leather. This is a special color made exclusively for Machine A. It's likely that only about two of these exist in Japan. One of the buttons has cracked (see photo 4). The crack is located roughly in the middle of the strap, but when worn crossbody or on the shoulder, the cracked part will be near the shoulder, so it's not very noticeable during use.