Martha Stewart Roving Wool Snowdrift 598 - 50g ball. 100% Wool Soft, natural roving wool works up fast for warm, cozy sweaters, long scarves, and colorful hats. It's also great for felting projects. Care: Items made from this yarn may be laundered through the use of water, detergent or soap and gentle hand manipulation. Any dry cleaning solvent other than trichloroethylene may be safely used. No bleach product may be used. Lay out horizontally for drying. Regular ironing, steam or dry, may be performed at Low setting (110C, 230F) only.