Oh boy, do we love Pellon SF101 Shape-Flex! This 100% cotton all purpose, woven, fusible interfacing provides body and permanent stability when used as a backing for needlework and punch embroidery. The absolute perfect stabilizer when making t-shirt quilts. It can also provides crisp support for collars, cuffs, yokes, pockets, facings, and other detail areas if you enjoy making garments. I just love doing stitcheries and this is always on the back of my projects before the first stitch goes in!