J Crew Fair Isle turtleneck sweater in Supersoft yarn Size XS A magical mixture of merino wool... alpaca and stretch makes this sweater Supersoft (hence the name). Add a colorful Fair Isle yoke (inspired by vintage ski sweaters) and a cozy, chunky knit, and—ta-da!—you've got pretty much the perfect winter sweater. Merino wool/alpaca/elastane. PTP 17" Length 23"