The top has a ringed screw cap which is perfect for attaching to your rucksack if you are walking.
Every time I have used it my water has been as fresh as when I poured in it, you don't get any metallic taste at all. I love that if my bottle should become damaged at all the liner will still be perfect.
On the night if my walk I managed to save 2 plastic bottles by bring my own bottle already filled so not only are they fantastic at keeping your water fresh they are brilliant for the environment.
SIGG have been designing and manufacturing water bottles since 1908 in their own factory in Switzerland.
The bottle liner is .
The bottle is suitable for cold liquids only and has been tested with a wide range of cold drinks, you can even carry fizzy drinks.
SIGG do a wide range of bottle in different sizes and for different purposes, I particularly think they would be brilliant for children to carry their drinks in for school because of how strong they are, if your children are like mine you would have replaced many plastic bottles over the years.
I would recommend SIGG bottles to family and friends & will be taking mine with me when we go on our travels.
I was sent the bottle for the purpose of the review, all words and opinions are my own.