Polyneon No.40 1000m spools. Madeira's 100% polyester embroidery thread, Polyneon is constructed of a specially developed raw material which eliminates looping, puckering and virtually all thread breaks. Suitable for almost any application, Its extraordinary dyeing process produces stunning and ever-changing colours throughout the whole spool. Give a magical appearance to all your sewing with “Astro Colour” - every embroidery will be a unique masterpiece.