they did not leak but [SEP] i have owned this containers since 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 could not get the conditioner out so had to throw that one outplus side they were easy to fill so if you travel a lot you may like them