There is no washing label from the beginning. It was fine to wash it normally. As it has been worn, please refrain from purchasing if you are concerned about this. There is no lining, so we recommend an inner layer such as a camisole. I just checked, and it's size M. My 160cm daughter wore it. Length: 80cm. I am also selling other items, so if you purchase multiple items, I may be able to offer a discount. Please consider this.