Malabrigo Merino Worsted Aran weight yarn spun from the finest merino wool and kettle dyed in Uruguay to produce colourful and sumptuous soft skeins, with subtle variations in colour and texture only hand dyed yarns have. Malabrigo Merino Worsted Aran weight yarn is 100% Merino wool. Hand wash and dry flat. Each 100g skein is approximately 205 yards (190m). Recommended needle size is 4.5 - 5.5mm (US 7 - 9) 18 stitches per 4 inches. Note: As with any hand dyed yarn, there can be significant shade differences between skeins within a dye lot, so we recommend that you alternate skeins every few rows, to prevent striping.