This is the tomtoc Navigator T66. It has a capacity of 40L. I purchased it about a year ago, but I haven't used it much, so I'm putting it up for sale. I think it's relatively clean, but I used it for everyday use, so I think there's a feeling of use. I've also uploaded photos of what appear to be scratches and stains. Please understand this beforehand before purchasing. The following is a quote: 40L Large Capacity & Carry-on This is a 3-way backpack with a main compartment, a PC storage pocket, and a front pocket. The 40L main compartment opens and closes like a suitcase, making it very easy to take things in and out, and can store up to 4 nights' worth of clothes. If you have less luggage, you can make this backpack more compact with the side buckles. Size: 52cm x 34cm x 23cm