To wear this men's two-piece sweater, simply put on the bottoming shirt first, then layer it with the outer sweater. It's suitable for various autumn and winter occasions. When cleaning, follow the care instructions on the label. Usually, it's best to hand - wash it in cold water or use a gentle machine cycle. Avoid using bleach as it may damage the knitted material. Hang it to dry to keep its shape. Store it in a cool, dry place when not in use to prevent mold and mildew.