The vials were purchased for a flight. The cover and the bottles have passed through customs smoothly. Plastic is slightly flexible and does not seem too fragile, at least I had no problems either with plugs or with the bottles during the trip. You have like the picture of a bottle for soap, a spray bottle, two bottles for shampoos and creams for two bottles. The perfume bottle (spray) broadcasts a good dose of product, perfect for toilet water but if you use a strong fragrance, pay attention to overdose. For other nothing to report, the soap bottle is protected by a pin to prevent it from firing during transport and the perfume with a cap that sufficiently yours. The others do not tend to open and thus have no special protection.
The size is good enough for most trips (in my opinion, can be 7-10 days without problems, just over two weeks being very thrifty (soap can leave quickly) with concentrated products) and not too cumbersome.
However, I was very disappointed with the cover, it's a simple freezer bag with a plastic zipper to close. We would have appreciated transparent pockets (if it does not pass customs course) or straps to hold the product in place. My bag was torn at the slide very quickly (I left three days to clear customs to return the products I put in another bag) making it impossible to close (can be closed but there is a hole below the closure over the entire length).