LifeStraw Go Water Bottle 2-Stage with Integrated 1,000 Liter LifeStraw Filter and Activated Carbon with Bonus Survival Kit Reusable LifeStraw Go water bottle that filters water as you drink; great for travel, backpacking, camping or emergencies Award-winning LifeStraw hollow fiber membrane water filter removes bacteria and protozoa without chemicals, iodine or batteries 2nd stage activated carbon filter reduces odor, chlorine and leaves zero aftertaste Removes 99.9999% of waterborne bacteria (&gt; LOG 6 reduction) and 99.9% of waterborne protozoan parasites (&gt;LOG 3 reduction) SOS kit comes with Multi-function pocket knife, fire starter, emergency whistle, mini compass, multi-functional lifesaving card, and wire saw.