Mountain Hiking with a bottle (or two) of Champagne

[tk421991]

Got a question about non-stationary storage...

I'm planning on hiking the Presidential Traverse in New Hampshire in July. This is a 20 - 25 mile hike, depending on the specific route, and it can be done in usually a day or two.

If I end up camping out in the woods below the tree line, I'd like to bring some champagne to go with dinner. Probably a non-vintage Taittinger, nothing fancy. Taittinger would be a nice, refreshing way to close out the day.

My question is this - is there a way I could store a champagne bottle in order for it to not spray around everywhere after a day of hiking? Assuming I don't shake my backpack seriously by falling or being rough with the bag. Would a BottleGuard work inside a backpack? Also, would a frozen towel or two around the bottle work?

Thanks in advance!