Thank you for your patronage! This is an insert for the Longchamp Le Pliage S size, which has been very popular. This is a handmade item. My specialty is woodworking, but I made this at my daughter's request and it was well-received. Now, both of my daughters and my wife use it. I am offering it at a low price so that everyone can use it. Made of 0.75mm thick PP sheet. (Matte or glossy finish, depending on the availability of materials.) The corners are rounded to prevent scratches on the bag. It is sufficient and useful unless you put something extremely heavy that would cause the bag to lose its shape. (This size's capacity is sufficient with one sheet, but if you want two sheets, please purchase the separate set of two. We also offer a thicker 1.0mm version.) Also, because it is milky white, you can easily find coins or other small items that fall to the bottom. Since it is handmade, there may be slight deviations, but it is finished within a practical range. Also, there may be linear scratches that appear to be from the PP material creation process, please understand. The size is based on my own bag (Longchamp Le Pliage S size, model number 1621, bottom size approximately 22 x 14 cm). Just in case... the bag is not included in the product. Thank you for your consideration. Instant purchase OK * Anonymized shipping (Yu-Packet Post) is available for an additional 100 yen. Please let me know in the comments before purchasing.