YXC 2oz (60ml) Travel Bottles Set - 6 Pack Leak-Proof BPA-Free Refillable Squeeze Containers with Flip Cap for Shampoo, Conditioner, Lotion & Toiletries | TSA Approved for Air Travel, Perfect for Vacation, Gym & Camping Essentials

I bought these because I was getting sick and tired of paying an unfair price for small bottles of hand cleaner. Now I just use these, pump them full using the giant bottle of cleaner, which is much more cost-effective, and that's it. The package has 6 of these, and that's enough for me to distribute cleaner everywhere I need it -- the cars, the entry hall table, my office desk, my shirt pocket for when I go shopping, etc.They must be well-constructed because last night, I put 70% isopropyl alcohol, which is super-runny, into one of them and sat it on a plate in the kitchen, just in case it leaked. It's a strange construction because the only flat part of the bottle is the cap, meaning they're stored upside-down. You can't store them right-side-up because the closed side's rounded. I figured the design might assure a big puddle of super-runny alcohol in the morning. But no, not a single drop leaked out; the bottle was still full this morning.They seem to have figured out how to prevent leaks from the two main possible sources, the screw-on cap, and the flip-top part of the cap.The only downside to these is that the central round exit hole in the cap is a little bit larger than I'd like, so for alcohol, for example, I need to pour carefully because otherwise, too much comes gushing out. But I can pour carefully, so these meet my needs.I'm inclined to give 5 stars to any product that clearly saves me money.