LifeStraw Peak Series Gravity Water Filter - Highly versatile means the gravity system is designed with every occasion in mind. Use as a gravity system, large squeeze bottle, as a straw, or use the filter with a water bottle. Extreme durability: premium materials make it tougher and ultra leak-proof so you’ll never have to buy another. The re-engineered membrane and custom backwash accessory means better performance against sand and silt, maintaining great flow over the long haul. Membrane microfilter protects against 99.999999% of bacteria, 99.999% of parasites, 99.999% of microplastics, silt, sand, and cloudiness  Meets US EPA & NSF P231 drinking water standards for the removal of bacteria and parasites  Membrane microfilter lasts up to 500 gal
2,000 L, pore size: 0.2 micron  Hose length: 47in BPA Free, FDA approved, premium materials  Includes: LifeStraw Peak Series 3L gravity bag with hose and standard quick connector, carabiner, leak-proof cap for water storage, easy carry strap, backwash accessory, user manual