Made from obi (sash). The string is an obijime (sash cord). Size: Approximately Width 15 x Height 23 x Bottom 15 x 4 cm The length of the string can be adjusted using the obijime. The opening is made open, but a magnetic clasp can be added for an additional 200 yen. If you would like one, please comment. I also have backpacks and tote bags for sale. Custom orders are also accepted. Thank you.