Cumulus by Juniper Moon Farm takes the strength of 94% Israeli Mako cotton and adds a 6% nylon (polyamide) binder to make this worsted weight yarn even stronger, but lighter, than traditional cotton yards. This chainette construction makes the yarn lofty and light, and adds to the yardage--284 yards (meters) are in each 3.5 ounce (100 gram) ball. Machine washable and durable, this yarn is available in solids and variegated colorways.