This is a set of 5 long-sleeved undershirts in size 70-80. I bought these as spares, but my child outgrew them, so I'm selling them unused. The ones on the right were purchased at Aeon and are made of a quilted material, so they seem warm. The ones on the left were purchased at Nishimatsuya. Please consider purchasing if you understand that these have been stored at home.