100% Extrafine Merino Wool Approx. 116 yds/50g Weight: DK Gauge: 5.5 sts/1in Needle: US 5 Hand Wash The latest addition to the Debbie Bliss yarn Line, Rialto is an extra fine merino that is a dream to work with. It is an all season yarn, cool in summer, warm in winter. Rialto is a merino wool that retains all the softness of those fibers, but has a practical element that makes it perfect for everyday wear.