Polyneon No.40 1000m Spools. Madeiras 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, Polyneons unique formula makes this thread extremely durable and smooth running. Vibrant colours are glossy, as well as resistant to chlorine bleach, making Polyneon the ideal thread for embroidering on uniforms, safety garments and commercial linens.