This Periwinkle Ralph Long Sleeve Sleep Shirt is super versatile. You can wear it for a relaxed sleep at night or a casual day - time look. To put it on, simply unbutton the front and slip it over your head, then button it up. When it comes to maintenance, it's easy. You can machine - wash it in cold water with like colors. Avoid using bleach as it might damage the hand - painted floral pattern. After washing, tumble dry on low. As for sizing, as it runs true to size, just pick your regular size. If you're between sizes, you might want to go a size up for a looser fit.