Use this to fuse batting pieces together to make a larger piece to fir your quilt top. Excellent for using up all those small pieces and odd sizes you have cut off from previous battings! Just butt up straightened edges together, lay tape across the cut so half is on each layer and fuse with a hot iron. So quick and convenient, it eliminates the old pinning and stitching technique needed to fit a specific project. This product can be used on any batting fabric content.