Weir Crafts Merino Wool Roving for Felting - 1 Ounce CHARCOAL Merino wool roving - one ounce Color: CHARCOAL A fine, silky wool for nuno and needle felting. Very fine, 21 micron fiber. 51 COLORS AVAILABLE - click "Weir Crafts" at top of listing, then "wool roving" section, to see all colors.