This is a Tsumugi
Kyo Fukuro Obi(shorter than usual fukuro obi) with 'yoroke-jima'(wavy stripe) pattern, which is woven like Sahiko embroidery technique.
It also has dyed pattern with pale colors.
Textile is exquisite silk and has rather crisp touch.
The wrong side has rustic stripe pattern, which is woven.
Textile of the wrong side is also silk and has soft and nubby touch.
It has a folding line, but there is no other flaw.
Please check photos for details.
It's still wearable enough with very good condition.
Enjoy wearing the fashionable Tsumugi