Hello dear customer, Thank you for your interest. Our product is made of **viscose supreme** fabric, **medium thickness** and **unlined**. In general, it is not suitable for daily use, it is not very thin and completely transparent; however: - Especially in **light colors** (stone, pink, biscuit, etc.) under strong light, your inner lines may be a little bit. - In darker colors (black, navy blue, burgundy, etc.) The probability of showing inside is lower. For a more comfortable fit, consider pairing it with nude-colored underwear. We recommend that you also check the product images and customer reviews for extra control.