They say they give you an extender but it get air and doesn’t work.

If you don't jam it in there just right air gets into the straw.

You suck up more air than water.

so I’m sucking air in with my water.

The design flaw is that the straw does not attach in anyway, so you have to suck air while trying to drink water

I think it would help me consume the amounts of water I should drink everyday but the straw doesn’t fit tightly into the lid and every time I try to drink out of it I suck air and not just a nice regular flow of water.

Now it makes this awful slurping/air hissing sound when I drink

Be sure to wash it after each use and leave top open to air it out and avoid the funky smell.

It sucks up air when you’re trying to drink