The 2-Quart Bladder Canteen represents one of the newest designs for military canteens. No longer are canteens made from rigid materials like aluminum or hard plastic, they are made from a variety of materials to include this flexible polymer. One of the main reasons for this choice of materials is it allows for space savings during transport when the canteen does not have water or other liquids inside.
With the large 2-quart capacity, this canteen is ideal for use during long hikes where no water supply is expected to be found. There is enough capacity in these canteens to ensure you can stay properly hydrated while on the move and between water sources. When you are not using the canteen, it can be compressed down to take up less space in your pack or rucksack.
Although the canteen is perfectly functional, I'm not confident that it will hold up to long term use. Will update this review after long term use.