It is worth it. Grayl is a portable water filtration system for tourists and survival fans will appreciate. It is poured, pressed, and drunk. Stainless steel.
Manufacturers offer various filters for use with their system. It has been noted that it can be used to remove pathogenic bacteria from the water. Growth of mold, powdery mildew and bacteria. It is a result that you can get some water. Declared removal of up to 99.999% of all the water from the water.
Manufacturer site – www.thegrayl.com
GRAYL filter: Clean water is always at hand.