Red Heart-Fashion Crochet Thread. This lustrous and soft crochet thread is perfect for fashion apparel and accessories. Thread is size 3, made of 100% mercerized cotton, and is dyelotted. Care: machine wash, dry flat, do not bleach, do not dry clean. Suggested crochet hook size E-4/3.5mm. This package contains 125 yards of crochet thread. Available in a variety of colors, each sold separately. Imported.