I have 4!!!
They are brilliant for taking on holiday (in EU countries) where you can fill them fro any tap cutting the cost of buying bottled water.
To be fair they do specify the filter is to remove chlorine and other tastes and NOT a micro bacterial filter.
The bottles are thicker than standard 'dispsable' ones but do tend to 'crease' when you squeeze them, the water flow is slow as you are sucking it through the filter and you get a vacuum as the whole unit is sealed to a degree so drinking can be noisy and slow ish.
The original idea was developed in the US to try and cut down on the amount of plastics going to landfill as (i think) every person was throwing 2 500ml bottles away everyday. the filter is designed to last 300 fills and can be recycled (along with the bottle when it splits or becomes damaged)
The filter will not fit a normal bottle
I use mine everyday (i got a pack of 2 with a spare filter for £10 in a sale at millets) but my wife cant get on wit them as the flow of water is too slow and you can only get a mouthful before having to let the bottle 're inflate'
For a sports bottle they would be useless, for a day to day 'sipping' bottle give one a go
If needs be i can do a proper review if people want one?
