RED HEART-Boutique Sassy Lace Yarn. Sassy Lace is made of a sheer lace that has holes woven into the top edge so it can easily be knit or crocheted. Sassy Lace adds a romantic look to any outfit. Perfect for all knit and crochet projects. Weight category: 6. Content: 100% Nylon. Putup: 27yds/24m.US9/5.5mm knitting needles. Suggested crochet hook size J10/6mm. Dyelotted: we try but are not always able to match dyelots. Care: Hand wash cold, dry flat, do not machine wash, do not bleach, do not iron, can be dry cleaned in solvent P. Imported.