Comme Ca Ism short-sleeved shirt Size: 150A While it has a neat appearance, it's made of polo shirt material, so it feels good against the skin. I think it's comfortable even for children who aren't used to wearing shirts. I think it can be worn for formal occasions as well as casual ones＾＾ The buttons are snap buttons. My child wore it for a music recital and a competition. I also have other Comme Ca Ism formal wear items for sale. Bundling is possible.