Hi!
New here.
I was wondering if anyone has a good tip or trick for packing an 11oz MSR bottle for my whisperlite. I leave the pump in the bottle on trips but don't want to expose any gear to possible leaking. I saw a cool trick someone on YouTube uses for the larger bottles. He used a tennis ball tube and cut the end off to fit just around the bottle for a pretty air tight fit. But the 11oz is too all in diameter for that. I guess a plastic bag of some sort will work, but was wondering if anyone had a cool way to do it.

Thanks in advance!