This is a GU all-in-one. The fabric doesn't stretch, and the waist has elastic. The zipper is fully open as shown in the photo. It seems to be a relatively slim fit even for a size S. The fabric doesn't seem to pill, but there is some slight wear and tear, so please understand this before purchasing. The back pockets are fake. It will be shipped in an A4 envelope. I will consider price negotiations only for those who purchase multiple items. Please let me know in the comments if you are interested. Also, for clothing items, I will offer the following discounts: The same applies to children's clothing. 2 items...5% 3 items...10% 4 or more items...20% This is calculated per item, not per point. If you calculate the discount and request a combined purchase, I can respond smoothly, so I would appreciate your cooperation. #GU #GU #SizeS #AllinOne #Sleeveless #Black #Black Color...Black系 (Black系 means "Black-based" or "Black-related")