BellFlask - 15 oz. Plastic Flask, Patented, Flexible, Metal-Free, Reusuable, BPA-Free with Carabiner Clip and Filling Funnel

Awesome! Didn’t leak

I used these for traveling in Europe where carrying a water bottle around was tedious and cumbersome and, in some places (museums), not allowed. We were able to fill these up wherever we could, drink the water, then roll up the flask and put it in our bags. SO easy to carry around and they didn’t leak at all. Practical and functional. The carabiners that come with it are useful with the flasks for attachment or just for any carabiner needs.

I saw another review say these are not good for backpacking, but I had the exact opposite experience. I took all three of these on a 7 day backpacking trip in the High Sierras. We setup base camp at 9,980 elevation just below the tree line, and did day trips up to 11,000 elevation. I had all three flasks filled nearly to the top and stuffed into my backpack and encountered absolutely zero leaks or issues at all. Filled them with Double Chocolate Liqueur, Praline Sipping Cream, and Vanilla Peppermint Baileys to mix with coffee and hot coco. They lasted the entire tirp without a drop leaking anywhere it was not supposed to go. They are super lightweight at half an ounce each, and hold around 18 oz of liquid. Great deal, and I highly recommend these.

These flasks are the perfect way to bring your favorite adult beverage to events where a glass bottle would take up too much room, or would be frowned upon. These are not too large, nor are they too small. The included funnel is perfect for filling/refilling, and they can be rinsed and reused many times. I've not used the included carabiner but I'm sure it would come in handy in a backpack or sack. I would give this five stars if it had a way to label the contents.

I'm a huge fan of these flasks. They are designed extremely thoughtfully and also seem to be well made, so they will hopefully last a while too. I love that they easily stand up so you can fill them, the opening is in the middle on top and not at an angle off to the side. I also really like that they hold A LOT and quite a bit more than they look like they will, but if you want to keep them flat and more low profile, you can fill them less and they stay super flat and easy to pack. It's also nice that they have measurements on the side AND they're clear on the side, so you can have a very good idea how much liquid you've added.

Was easy to use to get into a sports venue. Pays for itself after one use!

Fairly small, seems good quality, cute packaging

These sneaky little flasks worked great, I filled it with my liquid of choice. I put them down the front my jeans using my belt and waist to hold them in place. I brought two in into a festival on Saturday and the other two on Saturday. Sure, I was nervous, who wouldn’t be? I’m smuggling alcohol into an event. Let me tell you. I got up to security with my pockets already emptied. I expected a metal detector wand and pat down. I made sure to have my pockets empty and in hand since I know what to do. The did the metal detector wand, didn’t even go off for my pigeon tree crafting belt. I got through. The rest of the festival I spent a total of $30 on mixer, poured my own drinks, I even shared some with bystanders. Can’t praise this product enough 10 out of 10 out of 10. Only thing I wish, that it was a little flatter when full, definitely looked like a bulge in some pants. But it definitely holds a lot of booze and works perfect.

This is a very basic flexible flask. As others have suggested, I see no point in putting a huge flask label on the item on both sides when its supposed to be discreet. The main problem with this item is that when the flask is open, the locking ring can be easily lost as it is not held into place by anything. If that ring is lost, i think this item would start leaking. Tested with water first and held up fine even when i applied some pressure when fully closed. Item did not leak. The real test will be real world conditions. 3 stars due to the locking ring issue. After using it this and washing it, the flask takes FOREVER to dry out. I left it out and open for 2 days and it was still wet inside. Be sure to have a fan to circulate air to dry it out or else it will take forever to dry inside.