Janome White Embroidery Bobbin Thread is made from 100% Spun Polyester #120 weight thread. This 20,000 meter cone is the ideal embroidery bobbin thread for your Janome embroidery machine. Janome White Embroidery Bobbin Thread is made from 100% Spun Polyester #120 weight thread. This 20,000 meter cone is the ideal embroidery bobbin thread for your Janome embroidery machine.