DILLING's woolen underpants for babies are made from organic merino wool of the highest quality. They fit perfectly over any diaper and offer great freedom of movement. The underpants have undergone a gentle treatment at our the Nordic Swan Ecolabel dye works where scratchy hairs have been removed. They are, therefore, really soft and comfortable to wear. We recommend using the long woolen underpants in combination with a woolen vest or body of the same quality. Due to the body temperature-regulating natural properties of the wool, such a set can help protect against cold weather as well as against over-heating.