This is a classical Fukuro obi
with 'housouge'(large karabana flower) and 'karabana'(imaginary flower in China) on lattice pattern, which are woven.
Lots of foil threads are used, but piece has a modest gorgeous atmosphere.
Textile is transparent silk. (Wrong side is not transparent.)
(Lining is not added inside.)
Extremely slight folding line can be seen, although there are no flaw photo and figure.
However, there is not prominent flaws.
Please enjoy this dignified design from Japanese classical motif.