if you're backpacking, I wouldn't think you would need to carry an 8L capacity!

IMO 4 liters is the max you would ever need, meaning for 1 overnight camp 4L takes you through at least a dinner and a breakfast, plus leaving you with a liter when starting the next days hike.

And if you need more, just refill and filter.

REI Member Since 1979 YouTube.com/philreedshikes