Woot offers LifeStraw Personal Water Filter for Hiking, Camping, Travel, and Emergency Preparedness, 2 Pack, Blue for $14.99 (orig. $39.95). Free shipping for Prime Members.

Product Description:
LifeStraw is the original award-winning ultra-light and portable personal water Filter that makes contaminated water safe to drink. The straw-style Filter lets people drink directly from streams and lakes or from any container. This makes it ideal for hiking, backpacking, camping, travel, and emergency preparedness. LifeStraw removes 99. 9999% of waterborne Bacteria, including e. Coli and salmonella, and 99. 9% waterborne protozoa, including giardia and cryptosporidium. It also reduces turbidity or muddiness, by filtering particulate matter larger than 0. 2 microns. Throughout its life, each LifeStraw will transform 1, 000 gallons of contaminated water into safe drinking water. At the end of its life, the flow rate will decrease until the LifeStraw stops pulling water through the Filter. At LifeStraw we believe that doing good is good business. For every LifeStraw product you purchase, we provide a year of clean, safe drinking water to a child in a community in need. 

• Protects against 99.999999% of bacteria (including E.coli, Salmonella; 99.999% of parasites (including Giardia and Cryptosporidium); 99.999% of microplastics, silt, sand, and cloudiness
• Ultralight and durable, the LifeStraw weighs less than 2 ounces (46 g) so you can pack it anywhere
• Long-lasting membrane microfilter will last up to 1,000 gallons (4,000 L) of water, that’s enough drinking water for an individual for over 5 years
• Be prepared with the ultimate survival tool, the LifeStraw has an unlimited shelf life and has been tested all over the globe to face the harshest conditions
• Your purchase has impact: one purchase, one child, one year of safe water
• LifeStraw is proud to be a B Corp and Climate Neutral Certified brand, committed to meeting the highest standards of verified social and environmental performance, transparency and accountability