This is a set of underwear: two items from Uniqlo and two others (white, unknown brand). They are made of 100% cotton, which is gentle on a baby's skin. These underwear are made of breathable mesh material, making them comfortable to wear even in summer. They have buttons, making diaper changes easy. The white underwear have some light stains, but they are still usable. Also, name stickers were attached to the tags, but I will remove them before shipping.