MUJI Nylon Mesh Bag-in-Bag A4 Vertical I used this for about a month after purchasing it. I only used it on weekends. There are no noticeable stains, but please understand that this is a used item. It will be shipped in a waterproof bag + envelope. Please note that due to the size, it will be folded in half in the middle for packaging. It will be shipped using Yu-Packet Post, which can be dropped off at a post.