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; press; 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.