Thank you for viewing. This is a persimmon tannin-dyed shoulder strap. I made it at home by dyeing slightly thick yukata fabric with persimmon tannin. I applied an interfacing (thin non-woven fabric) to the fabric, which is slightly thicker than tenugui or yukata, and folded it in four before sewing it together. Size: 2.5cm wide, up to 140cm long (including the hook) Adjustable How about it for a smartphone shoulder bag, sacoche, or other small bags? Although I haven't used it after processing it into a belt, I have used fabric from disassembled kimonos that I dyed with persimmon tannin at home. Please understand that there may be uneven dyeing. If you are considering purchasing, please read the profile section once. If you have any questions, please feel free to contact me.