Used a few times. The surface of the bag is mesh fabric, and the layer underneath appears to be nylon (I can't touch it directly, but I think that's what it is). There are marks from a ballpoint pen inside the inner zipper and around the top of the inner pocket. Size: Width: 39 cm x Height: 25 cm (measured at the largest points) It will be shipped via Yu-Packet, so it will be folded for shipping. Please understand this before purchasing. * Cancellations, returns, and exchanges are not accepted after purchase. * Please refrain from purchasing if you are concerned about scratches or other imperfections, as this is a used item. * Please note that we are not responsible for any shipping-related issues (scratches, dents, etc.).