Wearing a silk robe is not only a luxury image but also good for your health. Silk underwear is a natural product, whereas a lot of other materials are synthetic. Because it is natural, our bodies respond better to them. Silk helps the body regulate heat by keeping you cool when it’s warm outside and warmer when it’s cool outside. It helps to shed excess heat during the summer to keep your skin cool, while, silk pajamas also help to retain heat during the winter so you can stay warm.