If you want to make a Boro cloth that resembles the authentic stitched Boro cloths of the past, this fabric stitched with the Olympus Sashiko thread,
Walnut + Iron — honey folk clothing
Cast Iron Black Cloth for Boro & Sashiko - A Threaded Needle
Hi! I just finished this boro inspired denim jacket. Should I
Boro Sashiko Fabric, Wallpaper and Home Decor
Sashiko Fabric
Boro Sashiko Fabric, Wallpaper and Home Decor
Antique Japanese Boro, Shibori, Sashiko Indigo Kimono – Shibui
Boro & Sashiko, Harmonious Imperfection. Book - A Threaded Needle
Boro Sashiko Fabric, Wallpaper and Home Decor
DIY: Sashiko Needlework Sampler Cloth — Loop of the Loom
Cast Iron Black Cloth for Boro & Sashiko - A Threaded Needle
BORO::Easy Piecing: Sashiko Supplies: Shweshwe Fabric: Japanese
Antique Japanese Boro, Shibori, Sashiko Indigo Kimono
A Word (or Two) About Boro and Sashiko - C&T Publishing