This is a Fukuro obi
with exotic 'mukai-dori'(pair birds) on 'housouge'(large karabana flower) pattern, which is woven on the alluring foil background.
Its gorgeous design with lots of gold foil threads is suitable to tie at formal occasions.
Textile is exquisite silk and has soft and smooth touch.
(Lining is not added inside.)
Folding lines can be seen.
Please check detail photos.
Also, stitches of inside Tare are unpicked a little (about 2cm=0.7in) to see the title, although the flaw is not indicated on the figure.
However, they are not disturbing for wearing.
Please enjoy this stylish design from Japanese classical motif.