I've used this for about 6 months. While there is a sense of use, there are no noticeable stains or damage. Please understand that this is a used item before making a purchase. There is a USB port, but I discarded the cable because I don't use it. Brand Name: Nordace Product Name: Nordace Siena Lightweight Daily Backpack Category: Backpack / Business Backpack Capacity: Approximately 19L Size: Approximately width 29 x height 42 x depth 16cm *Inner depth (main compartment 12-13cm) (Laptop pocket) Approximately width 28cm x height 41cm x depth 3-4cm *There may be some error in the inner depth size due to the backpack expanding depending on the amount of luggage. Weight: Approximately 0.88kg Material: Frosted Fabric Polyester ● USB charging is possible even while wearing the backpack. ● The shape of the backpack does not collapse whether it is empty or full of luggage. ● The Nordace Siena has many hidden pockets. No worries about theft. ● With a USB charging port, you can enjoy walks and travel without worrying about running out of battery. ● A 15.6-inch laptop can be stored in a dedicated soft space. ● Attach the luggage strap to the handle of your suitcase for comfortable travel in the airport. Thank you for viewing.