NO CHEWING REQUIRED!
The Water Filter Bag by Helikon Tex allows you to begin the first crucial steps to prepare water for consumption.
Based on the millbank bag design used by the British Army during World War II, this water filter bag has been fitted with an integral carrying bag and a string for attaching it to a branch.
The string of the water filter bag has a pin, so you don't have to tie it. This significantly speeds up the use of the water filter bag in the field.
This water filter bag cleans the water from mechanical impurities. After filtration, you still need to use chemical tablets or boil water to truly purify the water....but at least you dont have to chew!