LifeStraw Peak Series Collapsible Squeeze Bottle with Water Filter - Highly versatile means the collapsible squeeze bottle system is designed with every occasion in mind. Use as a bottle, push water through it into cooking containers or other drinkware, use as a straw, or connect to other Peak Series systems. Ultra-compact, the reconfigured filter is tiny but mighty with a super packable kit that doesn't sacrifice weight or space. The bottle is 2x thicker, premium materials make it tougher and ultra leak-proof. 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 BPA Free, FDA approved, premium materials