Set of 4 long-sleeved undershirts and a sleep sack. The undershirts were purchased at Birthday. The 2nd and 3rd undershirts are made of thicker fabric, and the 6th undershirt is made of thin fabric. The sleep sack was purchased at Nishimatsuya. It's made of a thin, towel-like fabric. Please check the images. Selling because they no longer fit. They have been home-laundered and stored at home. There are no noticeable stains, but they are used items, so please purchase only if you understand.