RED HEART-Boutique Sassy Fabric Yarn. Sassy Fabric is a unique soft, sheer fabric strip with evenly spaces holes to make it easy to knot or crochet. Weight category 6. Content 100 polyester. Putup 30yd/27m. Knitting needle size 9/5.5mm. Suggested crochet hook size J10/6mm. Dyelotted we try but are not always able to match dyelots. Care hand wash, lay flat to dry, do not iron, do not bleach, it can be dry cleaned using P solvents. Imported.