The Survivor Filter Squeeze System allows you to fill up the included canteens and screw into your devices to use as a gravity or squeeze bottle system. The Squeeze Kit is the ultimate tool for your bug-out-bag, emergency kit or overseas travel. Cleaning water down to a filtration level of 0.05 Microns, that's at a cellular level. Thanks to the Triple Filtration System, the Survivor Filter is 400% better than LifeStraw at 0.2 Microns. Use the Survivor Filter Straw with any fresh water source when you're casually out on the trail, deep into a hike or drinking the water while travelling overseas. Simply drink straight from the source or attach it to the Collapsible Canteens. It works with three filtration stages that has been tested at Multiple USA labs to show: Log 5 Removal 99.999% of Protozoa (Cryptosporidium, Giardia and Parasites) Log 5 Removal 99.999% of tested Virus (Phi X-174), Staph and Bacteria 89% Mercury and Lead Removal Overview Stage 1: Cotton Filter Pad This is the direct contact with your water source to block out large particles and sits in the water inlet of the Survivor Filter Straw. It can be reused up to 1,000 liters and your straw comes equipped with 5 additional cotton pads. Stage 2: Ultra FilterThen the water moves through the Ultra Filter - located inside the Straw to block pollen, algae, Giardia, E.Coli, Protozoa, Cryptosporidium, bacteria and toxins. Independent tests have shown that the 0.05 Micron Ultra Filter can filter out 99.999% of testes virus and staph. The Ultra Filter can be easily back washed and reused up to 100,000 liters. Stage 3: Carbon Filter MouthpieceFinally, remaining contaminants gets trapped to the Carbon Filter Mouthpiece, which will reduce heavy metals, chemicals and improve the water taste and odor. The Carbon Filter Mouthpiece can be reused up to 1,000 liters. Specifications: Product SKU#: L600D Replacement Filter SKU#: Cotton Filter Pad: L600-CPK Ultra Filter: L600-UF Carbon Filter Mouthpiece: L600-CF Capacity: Cotton Filter Pad: up to 1,000 liters (264 gallons) Ultra Filter: up to 100,000 liters (26, 417 gallons) Carbon Filter Mouthpiece: up to 1,000 liters (264 gallons) Flow Rate: 200ml per minute (6.8 ounces/minute) Size: 7 x 1.4 x 1.4" Weight: 3.5 oz Components: Survivor Filter Straw 2x Collapsible Canteens 6x Cotton Filter Pads 1x Ultra Filter 1x Carbon Filter Mouthpiece 1x User Manual Useful How-to Videos Backwashing Your Survivor Filter Squeeze Maintaining Your Survivor Filter Squeeze