Review (2/5): They Didn't Leak But....
I have owned this containers since 2019. They have never leaked, however, over the past year I have not traveled much and the contents dried out. This means the walls are somewhat porous? Not sure but did not like it that I was out again (finally!) and both my shampoo and conditioner were too dry to use. I couldn't get the conditioner out so had to throw that one out.
Plus side: they were easy to fill so if you travel a LOT you may like them.