Stabalize It Embroidery Permanent Topping Variety Pack Stabalize It Embroidery Permanent Topping. Please note that this pack has 20 sheets in a variety of colors. Permanent Vinyl Prevents stitches from sinking into nap offabric. Coordinates with your embroidery thread to prevent the fabric from showing through the embroidery stitches, For example: whitethread on black fabric. Completely Covers Fabric, nothing shows through. Excellent Stability for dense embroidery. Ideal for embroidery on fabrics with nap such as:velvet,corduroy, terry cloth. ADS-PTVP1