Martha Stewart Crafts Hemp Yarn. This versatile natural blend-soft, absorbent, and machine-washable-is a smart choice for garments, knit or crochet baby blankets, and even household projects like washcloths, place mats, and dish towels. It works up nicely on the loom. Weight category: 4. Content: 65% cotton/35% hemp. 1.75 ounces/50g. 66yrds/60m. Gauge: knit: 16sts x 22r = 4inch/10cm, crochet: 12sc x 14r = 4inch/10cm. Machine wash cold, tumble dry, do not iron. Imported.