Originally, these were half pants. I remade them into a skirt style. I can't find the material label. It's mostly cotton, with a slight blend of stretch yarn. It has some horizontal stretch. Please refer to the photos for the design and measurements. The hem would ride up when wearing leggings or tights, so I added a lining. I hand-sewed fabric from a disassembled washable nagajuban (long undergarment) to the inside. Please remove it if you don't like it. It can be easily removed. (17) Photo 8: There is a brown stain that occurred during the storage of the nagajuban. The large brown areas that appear overall are part of the pattern. They are not stains. There are belt loops, so the waist is adjustable. Since it's children's clothing, there's elastic inside the waist for size adjustment. They have been worn to some extent, so there is some fading. Thank you for your understanding. The black part in the center is double-layered, so it's not see-through. It's also stretchy, so it allows for good leg movement, and you can ride a bicycle in it. I think it's equivalent to a women's size S to M, or L. I will ship via Mercari.