Flat cotton belting is used on certain models of bag machines and sideweld bag machines. There are several manufactures using our belts as original OEM specifications. We have manufactured sewn endless belting for over 35 years, and the two starting seamstresses are still working here today. Our Sewn Endless belts are available in two different materials and widths of 1” and 4 7/8”. The 1″ is run on the top and the 4 7/8″ is run on the bottom of the machine. Your length of belts will very depending on your system. Below are our two belting materials: Goldline: Cotton with poly-fill and a gold stripe running down either side. Two-Ply Cotton: Two layers of cotton.