bPillow Ticking Patches Prelubricated - .32 & .36 Caliber (Per 100)/bbrManufacture ID: 7135brbrPillow ticking was originally designed to be used in the manufacturing of pillow covers. An extremely tight weave 100% cotton fabric was needed to keep the feather quills from poking through the fabric. The U.S. Government went so far as to create a set of specifications which had to be adhered to by vendors who manufactured this material for the military (these patches match those military specs).