LifeStraw Go Series is the ultimate sidekick for safer, better-tasting water for travel and everyday use.The 18oz stainless steel BPA-free bottle filters out nasties, so you can fill up from airport bathrooms, a tap in Mexico, or a gas station while road-tripping, and the slim design fits in most car cupholders! The advanced 2-stage filter improves taste and protects against bacteria, parasites, microplastics, chlorine, silt, sand, and cloudiness.For every purchase, a child in need receives safe drinking water for a year.Capacity.18 fl oz.- 500 mL.Dimensions & Care.Weight:500 mL.- 468 g.Height:28cm.- 11in.Diameter:8cm.- 3.14in.Replaceable filters & parts.Double wall vacuum insulation keeps your water cool all day.Not intended to keep liquids hot, as heat inside bottle can cause pressure when opening after a few hours.Includes:stainless steel bottle, BPA-Free membrane microfilter, activated carbon filter, cap with color-matched silicone mouthpiece.LifeStraw Membrane Microfilter Removes:Membrane microfilter protects against 99.999999% of bacteria, 99.999% of parasites, 99.999% of microplastics, silt, sand and cloudines.Activated carbon filter protects against chlorine, organic chemical matter, and removes odors for improved taste.Meets NSF 42 standard for chlorine reduction.Meets US EPA & NSF P231 drinking water standards for the removal of bacteria and parasites.Membrane microfilter lasts up to 1,000 gal.- 4,000 L, pore size:0.2 micron.Activated carbon filter lasts up to 26 gal.- 100 L.