Keon Plastic Flasks - Reusable Drink Bags, Leak-Proof, BPA-Free for Travel, Outdoor Sports, Concerts, Events (8OZ - 10PCS + 2 Funnels)

These work surprisingly good! Snuck booze into a concert. No leaking, and it holds a lot

Great for any occasion. It holds enough qnd easy to fill up.

Filled "soft" and packed into the chest freezer these fill space and keep things frozen in case of power outages, without locking in giant chunks of frozen goods.Also works well for coolers and as an ice or hot pack for injuries.Out of curiosity, I filled the smallest one with *heavily* carbonated water from my Sodastream and tossed it out a second story window.It bounced spectacularly and slid across the grass, perfectly intact. Four times, until I tired of managing the stairs while retrieving and throwing it. Once it settled in the fridge for a while it was perfectly serviceable and is still holding soda water at new-can-fizz after two weeks. It's a little stretched out but the seams and seals are not budging and the membrane is still flexible and soft.I

Love these things. Fill em up with some good drank and take them into a concert for an extra good time and money savings as well! A drink these days at a concert is like $15-$20. No leaks either.

When you get these things, each cap has a little plastic gasket attached to the bottom. If you don not remove this gasket, it will leak. I don't know why they did this, but they seal okay if you remove the gasket. The picture shows a partially attached gasket.

Strong and does not leak

Exactly what I needed for travel

Gets the job done :)