The LifeStraw Personal Water Filter is the original award-winning ultralight personal "straw" filter for outdoor sports, activities and emergencies. The Lifestraw water filter makes contaminated water safe to drink by removing bacteria and parasites, preventing the majority of waterborne disease. Use it to drink directly from streams and lakes. Removes bacteria, parasites and microplastics. Durable and Ultralight: Weighs only 0.10 lbs. Long-Lasting: Filters 1000 gallons of water, enough for 1 person for 5 years. Ultimate survival tool, no shelf life, easy to clean and store.