
I ordered these for a flight I will be taking in January. I filled the bottles with what I want 2 weeks ago. I haven't had any leaks. I will also test them on a bus trip next week. So far I have filled longer containers; Shampoo, conditioner, Aveno shower gel, Dr. Bronner's, massage lotion and olive oil. Smaller containers, I only used 1 and it contains a leave-in conditioner. I have them all in a 1 liter ziplock bag and there is still room. I turned it sideways, upside down, to check and still no leaks. You have to be very careful when spraying thinner liquids by only opening while holding only part of the lid. They need some cleaning up. I was using dish soap and baking soda when I realized I had put Aveno in the wrong size bottle. Took a few washes but they can be cleaned and reused.

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