Thank you for viewing. This is a Muji nylon mesh bag-in-bag, A4 size, vertical type, gray. I used it for 4 or 5 days, but it didn't fit my backpack, so I'm offering it to someone who is looking for one. Please refer to the photos for the dimensions. For those who understand that this is a used item stored at home. No pets, no smokers. It may be folded for shipping. Please understand. Color: Gray