Portable water purifier - a great invention for hikers and adventurous types. Perfect for trips in the countryside or in the mountains. • Made of ABS • Sterile membrane filter • Light and easy to use • Cord to hang it on something • Ideal for water from rivers, lakes... • Purifies up to 1000 L • Removes up to 99.99 % of bacteria • Diameter x height approx.: 3.5 x 20 cm