I bought a 3 liter version, because I already have a 2 liter CamelBak Antidote. The cleaning was definitely easier because I can stick my hand in it and dry it manually, whereas, my CamelBak I hung it up to dry. The valve for this is also better. There is a lock mechanism and also a cover. This bladder fits nicely in my Deuter AC 24 Spectro. I am quite happy with my purchase. I even bought the Deuter Thermo bag and tube insulator to use this in any season.