|Red Heart Fashion Crochet Thread. The perfect crochet cotton for home decor apparel and accessories. Size: 5. Made of 93% Mercerized Cotton/ 7% Metallic. Put up: 100yd/91m. Recommended Steel Crochet Hook US 7 (1.5mm). Care: Machine wash gentle no bleach rinse well and remove promptly roll in towel and block. No dye lot.