The Crazy Outdoor Mama
I look for bottles that have as few parts as possible, are wide enough to clean by hand, and not easily breakable.
I suggest warming pumped milk up in a breast milk storage bag as it goes a lot faster that way!
I love using coozies to keep a prepared bottle warm if I am going somewhere!
The key to cleaning bottles easily while camping starts with the bottles themselves; pick a bottle with the minimal amount of parts as possible!