This is a 2-piece set of Uniqlo short undershirts. Size is 50-60. My baby wore them from newborn to about 2-3 months old during the sleeping period. I believe there is some pilling and signs of wear overall. One of them has a blackish discoloration on the part that would be at the back of the neck. Since babies often need to change clothes, how about these for spares? Sleeve length: Short sleeve [Brand] UNIQLO BABY's baby shirt undershirts are from a trusted brand, are of high quality, and use materials that are gentle on a baby's skin. [Size] The size is 50-60, suitable for use from newborn. They can be worn comfortably as your baby grows. - Brand: UNIQLO BABY - Size: 50-60 - Color: White x 2 pieces - Type: Shirt undershirt Thank you to those who understand that this is a used item and has been stored at home.