Review (5/5): Very useful!
I got these for hand sanitizer or lotion. I've had several other small bottles, but of the more "traditional" design, which are wider all around which means that they take up more space in my purse. I liked that these were slimmer so I thought that it would free up some of the space in my purse and they did. I no longer have to fumble around trying to make it fit with my other items in my small pockets of my purse. Now I just simply slip it in.
I also like the little carabiner that it comes with because I can clip it on my purse, on my car keys or a lanyard or whatever and carry it alone if need be whereas you cannot do that with the more normal usual travel size containers.
The design and material feel of this bottle makes you feel like you might not be able to squeeze as much product out as you normally can with the other bottles, but I've had no issues so far. I haven't had it spill or anything like that. I really like them!