Fusible non-woven printed with 1" grid (yellow) lines. Fusible on ONE side only... Arrange fabrics and colors without pinning and then touch press with hot iron to secure in place. Flip and sew rows together quickly and accurately with ease, matching your points and seams perfectly! Tutorial is online at https://www.youtube.com/watch?v=tEKDaJ4NIj0&feature=youtu.be just copy or click on this link to watch tutorial ... Sold by the Whole Yards or get a (25 yard) bolt.