Our take When you need something more secure than a zip-top bag, these Sea to Summit collapsible containers are the perfect solution. We used the leakproof and airtight vessels for everything from coffee creamer to pancake batter to frozen first-night meals. Bonus: The containers double as eating vessels, and when not in use they collapse down to less than an inch in height and nest together like a Russian doll. Four sizes are available, from 7.2 to 29 fluid ounces.
Trail cred “I accidentally sat on a full container in my backpack and the seal held,” said a tester after backpacking in Cali’s Emigrant Wilderness.