This is a navy undershirt made of a comfortable blend of polyester and polyurethane. - Color: Navy - Size: L～OX - Material: 80% Polyester, 20% Polyurethane Thank you for viewing. This is a baseball undershirt that my child used to wear. The sizes of the three shirts are different. The first and second shirts are three-quarter length, size O and OX. The third shirt is Rawlings size L. I'm looking for someone who will buy them all together due to shipping costs. They are used, so I will cut off the tags with names on them before shipping. I would appreciate it if someone who understands this would purchase them. I'm calculating the price at 500 yen per shirt.