This pajama set is absolutely gorgeous! The fabric is incredibly silky and soft. I'm 170cm tall and weigh 56-57kg, and the medium size fits me perfectly. It's slightly loose at the top, but I think that's how pajamas should be, not tight. The elastic waistband is very comfortable and stretchy. There's no drawstring. Washing and drying went smoothly without any issues. Although there were a few wrinkles from the packaging, ironing should fix them. This pajama set is of very high quality. Because the fabric is silky, it's not particularly warm, but it's very comfortable and does provide some warmth. It's just not as stuffy as cotton pajamas.