This is an adorable robe style pajamas themed after Tartaglia's narwhal, straight from Mihoyo's Taobao shop! This has a lot of awesome little details and is overall very well made and adorable. The material is super soft and similar to minky fabric. This is a size Asian Large, which is usually the equivalent to a US size Small, but this is pretty spacious so I think it would also fit a US Medium. I've included Mihoyo's size chart in the listing photos. This is the largest size they make this in. Also please note that this will be shipped in a vacuum sealed bag to reduce shipping fees. The bag is reusable and great for storage!