Feel Secure
"I feel secure in the fact that I'm well protected from micro plastics. The only drawback is that sometimes pressure builds up in the bottle and will come up through the straw and spill."
The LifeStraw Go Series Stainless Steel 18 oz is an insulated stainless steel water filter bottle priced at $49.95, with a slim 9" x 2.8" design that fits most car cupholders and backpack sleeves. Its two-stage filtration pairs a 0.2-micron membrane microfilter, which removes 99.999999% of bacteria (including E. coli and Salmonella), 99.999% of parasites, and 99.999% of microplastics, silt, sand, and cloudiness, with an activated carbon filter that reduces chlorine, odors, and organic chemical matter for better taste. The membrane microfilter lasts up to 1,000 gallons (4,000 L) — about five years of daily use — while the carbon filter lasts up to 26 gallons (100 L), roughly two months. The bottle meets NSF 42 for chlorine reduction and US EPA & NSF P231 drinking water standards for bacteria and parasite removal, and every purchase provides a child in need with access to safe drinking water for a year through the Give Back program.
Best for:
Not ideal for: households that need lead or PFAS reduction — the Go Series does not filter lead; LifeStraw's comparison page shows which products do.
How it compares: On the page's own comparison table, the Go Series matches a typical premium filter bottle (like Brita premium) on leakproof design and chlorine reduction, but adds what most pitcher-style bottles lack: 2-stage filtration that removes bacteria, parasites, and microplastics. Unlike some LifeStraw products, it does not remove lead or PFAS, and it does not remove viruses — it is a filter, not a purifier. Within the Go Series line, this 18 oz stainless steel model adds double-wall insulation in the slimmest format; BPA-free plastic 22 oz and 1 L versions and larger stainless steel 24 oz and 1 L versions are also available.
Frequently asked questions
What customers say: Overall rating: 4.596774 / 5 from 744 reviews.
Pairs well with
Shop the LifeStraw Go Series Stainless Steel 18 oz — $49.95, with free shipping on orders $75+ (US lower 48) and 45-day returns on unused items.
LifeStraw products have a history of use in some of the harshest conditions around the world, from refugee camps to natural disasters to extreme back-country, our products have to work because lives depend on them. Our testing and transparency is unparalleled and we use the most trusted performance criteria based on protocols established by the World Health Organization, the US EPA, NSF International and the Water Quality Association.
Overall rating: 4.596774 / 5 from 744 reviews.
The LifeStraw Go Series Stainless Steel 18 oz water filter bottle is praised for its effective filtration, great taste, and high-quality design. Customers appreciate its slim design, which fits easily in car cupholders and backpacks. The product provides clean and safe water, reducing the need for single-use plastic bottles and supporting a charitable cause.
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"I feel secure in the fact that I'm well protected from micro plastics. The only drawback is that sometimes pressure builds up in the bottle and will come up through the straw and spill."
"Literally addicted to drinking from it. By far favorite water bottle. One downside tho is my everytime I drink from my water bottle the air hole thing squeaks and gurgles. My friends’ bottles don’t so I think it’s just with this one. Overall tho I would totally recommend"
"Price is high. silicone colored base for bottle should be included. I pour distilled water into it but I love that it's filtering micro plastics. There is zero plastic taste."
"This water bottle is my new favorite. I work at a daycare so the cap is great for keeping the germs off. The filter is better than any other brand on the market. I’ve tried others and the water doesn’t taste as good as it does from this bottle. I wish there was a kids version for my kiddos!"
"Love the size and filter. Great for day-to-day use and travel! Highly recommend!"
"I bought this bottle to replace a Camelbak bottle that has a lifestraw filter. Unfortunately, the metal camelbak was only available in a huge size that was too big for both my backpack and the cup holder in my car. The new lifestraw bottle is a great color, and fits better in my car. But the straw design does not work as well as well as the flip straw on the camelbak. The cap is really too tall, so it still doesn’t fit really well into my backpack. And you have to find a place to put the lid while you’re drinking."
"Easy to take with and gives me piece of mind that my water is safe. Took it on a cruise and felt completely confident about the water I was drinking wherever we went."
"Dealing with hard water . No problems with this . I do have large hands, this bottle is a bit large to reach around . I look for a knob to put on it ."
"Came as described and in a timely fashion, can’t wait to use it"
"Easy to fill and filter anywhere. Not great for flying…water comes out the mouth piece with pressure at altitude."