This was only used on a couple of weekend trips, so it is in beautiful condition. Very gently used. Please do not ask me how many liters it is. I have no idea. Please see the photos. There is some information on them. I am a 5 foot eight woman approximately 135 pounds and it fits me perfectly. I could make it a little larger or even a little smaller. It is widely adjustable. Sorry, I am unable to answer any additional questions. This has been priced to sell, so no need to ask me for a discount. Lower 48 states shipping only.