This is a Tsumugi Fukuro obi
with unique checker board pattern, which is woven.
Textile is Tsumugi
silk and has soft but nubby touch with rustic atmosphere.
There is a spot of mold on the maegara(front patterned part).
However, when you start wrapping the obi from your right tummy to left(Rotate obi counterclockwise), it will be hidden.
Spots of molds can be seen on the wrong side, too.
Besides it has a folding line, so please check photos for details.
However, it still can be tied!
Please enjoy its distinctive fashion!