Used a few times in the summer. No pilling or stains. I used it before giving birth! The pants button is adjustable, so I was able to wear it even in my last month of pregnancy. It's also useful after giving birth. Please refrain from purchasing if you are concerned about it being used and that I have a cat at home. Will be shipped compressed. Size...M Color...White系 (White-based) Sleeve Length...Short Sleeve Season...Spring, Summer, Autumn Stains, tears, odors, etc....None