great leak proof containers [SEP] these are great travel containers they do not leak and they pass through airline securities easily it is so frustrating to try to bring liquids and creams with you on trips and the tsa agents make you throw your stuff away there are so many containers that you can actually fill a few containers of the same product so that you have enough for your entire trip with more containers that can be used for other things this is a great set for traveling and i highly recommend it