This is a jersey material woven with cotton and polyester threads. It has been bio-processed using special enzymes to remove fluff and create a clean fabric surface. Furthermore, it has been treated with silicone softening to add a smooth feel. The inside, which touches the skin, is polyester, providing a smooth and dry touch. It also has UV care function, allowing for comfortable wear until midsummer. Please consider this item. Although unused, please understand that it has been stored at home. Thank you for your consideration.