Thank you for viewing! (*´꒳`*) Instant purchase is OK. My daughter used this a few times for school trips, etc. There are no stains or signs of use, and it's in very good condition, so I highly recommend it! It's a no-brand item, but it was very convenient and useful. It also comes with a storage bag when not in use, so it didn't take up much space at home. I forgot to specify how many liters it holds, but it was able to hold enough for my child's 3-day school trip. When the luggage became too much, There are zippers on both sides, and when you open them, the width expands by about 6cm each, for a total of 12cm. (See photo 3 for the expanded gusset) The pockets on both sides are also large, and they can hold a lot of luggage. Approximate size measured with a measuring tape ↓ Height: Approximately 44cm Width (including the outer pockets): Approximately 36cm *When the gusset is expanded: Approximately 48cm Depth: Approximately 18cm Storage bag: Height 42cm, Width 34cm (I've also included a photo of it stored in this bag, see photo 14) If you can agree to the above, Please consider purchasing it. ⭐︎