This men's long - sleeve sweater is a great addition to your wardrobe. To wear it, simply slip it on over your head through the O - neck. As different suppliers have different size charts, make sure to check carefully before buying to get the right fit. When it comes to maintenance, it's best to follow the care instructions on the label. Usually, you can machine - wash it in cold water on a gentle cycle with like colors. Avoid using bleach as it may damage the sequins. Hang it to dry or tumble dry on low to keep its shape. And always remember, this sweater is made with a blend of cotton and spandex, which gives it both comfort and a bit of stretch.