It's a size SS. I've only tried it on, but I'm selling it because the size doesn't fit. ⚠️Please note that there is a sewing issue, such as fraying, as shown in the third photo.⚠️ It has been washed. I will fold it compactly and ship it. Small dog, dog, puppy, dog supplies, medium dog Stylish, dog clothes, dog clothes, walk, dog wear, dog clothes petparadise CREATIVEYOKO