Pick from two of our favorite light worsted/DK-weight yarns for Julie Hoover's Addison sweater pattern Plein Air, which combines the best of both the animal and plant worlds with a beautiful mix of merino wool and organically grown cotton or Cashmere Merino Bloom, a very soft, supple, and toasty warm yarn made from the most exquisite cashmere available and extra fine merino wool.