"Airwool" from Lana Grossa is a machine washable yarn which is sewn through the center. This super bulky weight fiber is 60% merino extrafine wool and 40% acrylic, plus it is quick-to-knit on larger needles. "Airwool's" texture and blend works well for winter jackets, sweaters, cardigans, ponchos, scarves and hats.