The LifeStraw Go Series Tumbler 18 oz is a rigorously tested, insulated stainless steel water filter tumbler designed for people who want safe, great-tasting water anytime, anywhere—whether commuting, traveling, or running errands. This tumbler features LifeStraw’s trusted two-stage filtration: a membrane microfilter that removes 99.999999% of bacteria, 99.999% of parasites, and 99.999% of microplastics, plus an activated carbon filter that reduces chlorine, odors, and organic chemicals for improved taste. The slim 18oz design fits most car cup holders and is made without lead sealing dots.
The membrane microfilter lasts up to 1,000 gallons (about five years of daily use), and the carbon filter lasts up to 26 gallons (about two months). LifeStraw’s claims are backed by transparent, standards-aligned testing (WHO, US EPA, NSF), and the company is both B Corp and Climate Neutral Certified. Every purchase provides a child in need with a year of safe drinking water through LifeStraw’s Give Back program, embedding measurable impact into every sale.
Customers praise the Go Series Tumbler for its clean water, durability, and ethical mission, though some note a firm draw through the straw and wish for a larger capacity. The tumbler is spill-resistant but not fully leakproof, so it’s best kept upright. Replacement filters are readily available. LifeStraw’s science-backed approach, field-tested reliability, and measurable social impact distinguish it from competitors—making the Go Series Tumbler a trusted choice for those who value both performance and purpose.
Overall rating: 4.35/5 from 77 reviews.
Common feedback: Customers value the filtration quality, durability, and social impact, though some mention a firm draw and desire for larger capacity. The tumbler is praised for its sturdy build and easy cleaning.
Every purchase supports LifeStraw’s mission to deliver safe water where it’s needed most. Stay hydrated, stay protected, and create real impact.
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: 4.3690476 / 5 from 84 reviews.
The LifeStraw Go Series Tumbler is a highly-rated, 18 oz stainless steel bottle that filters out contaminants, improves water taste, and boasts a sleek design. Customers appreciate its durability, convenience, and the long-lasting filters that provide up to five years of safe water.
Review topics: ["size","color","quality","fits","looks","design","feel","handle","water","plastic","temperature","problem","durability","set","use","tumbler","filter","bottle","cup","taste","lifestraw","straw","idea","bacteria","capacity","drink","companion","choice","life","microplastics"].
"Just received my Lifestraw tumbler. I have so many Lifestraw products and love them all. BUT I saw where you can drink something other then water if you take the filter out. How do I do that if there is not straw to get to the bottom liquid? Can it us a regular straw? I don't feel like that would be long enough."
"My new LifeStraw Go 24 oz. Tumbler is my new constant companion. It makes drinking fresh, clean water daily easy. It keeps the water comfortably cold and is simple to clean and refill. I love it!"
"I just started using this and I love it. The water quality at work is questionable at best, and this has been a life saver. The first use, took a little more work to pull the water from the straw, but not it’s great!"
"This is exactly what I wanted, difficult to water when sucking through the straw. But I absolutely love it. This is such a great company, and not my first purchase and I will continue purchasing for you guys."
"So far, I am really happy with the tumbler. I have hard water in my house and I don't like the taste of the tap water so your product seemed like a perfect fit for me. I also like the fact that this one you keep down and drink from it as opposed to other ones that you have to lift it up to drink from it. Those ones never worked for me so I was happy when I went on your website and seen this one and decided to try it. Whoever invented this one is brilliant I think. Thank you for having this!!"
"Working out great. No issues. Would recommend to others."
"Works with out a hiccup"
"Treated myself to the tumbler because I love the company and wanted to try something new. Love the colors/look, the stainless steel and the purifier straw features and that’s why it’s not 1 star. However, the cons are just too hard to overlook. My biggest issues with the tumbler is that there’s no airflow so when the lid is on all the way it gets harder to drink out of the tumbler because you just create a vacuum seal effect the more you drink. It’s really difficult to open the tumbler when you need more, which is often because the filter is big and takes away from the volume of water you can fit inside the tumbler, but the lid is silicone and is a push/pull on and off instead of a threaded lid which amplifies the vacuum seal pressure issue. On the bright side I guess it’s hard to spill when it’s that tight lol. Would love to see an upgraded version of these tumblers where it’s actually easy to drink out of them."
"The water bottle broke when dropped, need to replace lid and straw connector. Also, the other bottle is deeper than the filter straw goes, so even though there’s 1/4 of water in the bottle, you still need to refill. A little annoying."
"Love the fact that my tumbler fits in my car cup holder. Lifestrawstands behind their products and I appreciate that. Great warranty."
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