The LifeStraw Sip Water Filter Straw is a slim, reusable stainless steel straw designed for travel, daily use, outdoor adventures, and emergency preparedness. Weighing less than 3 ounces, it requires no batteries or electricity—just sip and the advanced membrane microfilter removes 99.999999% of bacteria, 99.999% of parasites, and 99.999% of microplastics, silt, and sand. Each straw filters up to 1,000 liters (over a year of daily use) of clean water.
Independently lab tested to US EPA & NSF P231 standards, the Sip is trusted by travelers, outdoor enthusiasts, and those building emergency kits. Made from BPA-free, FDA-approved stainless steel and silicone, it’s both durable and safe. As with all LifeStraw products, every purchase delivers a year of safe water to a child in need—making your choice part of a proven, measurable impact model.
LifeStraw is a B Corp and Climate Neutral Certified brand, committed to science-backed performance and equitable access to safe water. Every LifeStraw Sip purchase delivers a year of safe water to a child in need.
Frequently Asked Questions
What does the LifeStraw Sip filter out?
* The Sip removes 99.999999% of bacteria (like E. coli), 99.999% of parasites (including Giardia and Cryptosporidium), and 99.999% of microplastics, silt, and sand. It does not remove chemicals, heavy metals, or viruses.
How long does the filter last and how do I know when to replace it?
* The membrane microfilter lasts up to 1,000 liters (264 gallons). When the flow rate slows significantly or stops, it’s time to replace the straw.
How do I clean and maintain the LifeStraw Sip?
* Backflush by blowing water back through the straw. Remove the silicone mouthpiece and bottom plug weekly for cleaning. Long-term storage instructions are available in the Care Guide.
Can I use the Sip with beverages other than water, or with hot liquids?
* The Sip can be used with non-carbonated beverages like clear juice or cocktails (avoid pulp). Recommended temperature range: 33°F (1°C) to 140°F (60°C). Do not use with hot liquids above this range.
Is the filter or any part replaceable?
* The filter is not replaceable; however, the mouthpiece can be replaced and all non-membrane parts are recyclable.
Customer Reviews & Highlights
"I finally can drink enough water when I’m out to dinner and don’t want to bring my water bottle along." — Isabella S.
"The idea is awesome—I am putting together an emergency bag and this was my first item." — Leila H.
"I do a decent amount of traveling and this little straw provides a great option for ensuring I'm drinking clean water no matter where I am!" — Amber W.
"I use this everyday and it gives me peace of mind to know I can now trust the water I am drinking in restaurants and at home." — Edna P.
"Best addition to my hiking gear." — Vicki F.
Overall rating: 4.64 / 5 from 125 reviews.
Comparison & Independent Testing
Lab tested & certified to US EPA/NSF standards—unlike many alternatives.
Ultralight, long-lasting, and proven in harsh conditions worldwide.
Every purchase supports LifeStraw’s Give Back program: Learn more.
Every LifeStraw Sip purchase delivers a year of safe water to a child in need. Shop with purpose, backed by science, and join a global movement for equitable access to safe drinking water.
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.
LifeStraw Sip is a reusable and long-lasting filter straw that removes microplastics, bacteria, and parasites. It is compact, portable, and user-friendly, requiring no batteries or electrical outlets. Customers appreciate its effectiveness and convenience, making it a must-have travel companion. For every LifeStraw product purchased, a child in need receives safe drinking water for a year.
Summary topics
Innovative Filtration Concept (9%): Customers keep praising the innovative filtration concept, describing it as great, awesome, and a good idea.
Clean Water Satisfaction (14%): Customers expressed satisfaction with the clean water, as they found it convenient and effective for various uses.
"I finally can drink enough water when I’m out to dinner and don’t want to bring my water bottle along" — Isabella S.
"The idea is awesome-I am putting together an emergency bag and this was my first item." — Leila H.
"I will try it on my trip to Europe Love the straw design and idea It’s very portable and packable" — Eva M.
Reviews
awesome and portable!
"love these straws! we have had a lifestraw pitcher at home for a while and wanted something on the go that we could take camping. my partner and i both drank right out of a stream on a hike and it was awesome! love the comfy mouth piece and convenient carrying case to keep it clean."
— Alexis K. (5/5)
"Good product"
— Stephen (5/5)
Dont know
"I'll find out later on."
— Joe S. (5/5)
Best straw
"I love this straw I keep in car."
— Dottie J. (5/5)
Sip/Lifestraw
"Works like magic! I've never tasted water so good!! Get one and thank me later!"
— Linda L. (5/5)
Fantastic for No Lid Use but Too Big/ Thick for Cups with Lids
"The straw works great! No complaints about the function and easy to clean. The only thing I was disappointed by was it is too thick for me to use with my Starbucks Tumbler or cups of that nature."
— Maya B. (4/5)
Helpful product
"Great product with a very helpful ability to protect yourself from germs and bacteria and parasites but could be a little easier to suck on to get m the water out. Of course, I have emphysema, however my wife also thought it was a little difficult to use. Maybe we just need practice"
— Jeremy H. (4/5)
Portable and works great!
"I do a decent amount of traveling and this little straw provides a great option for ensuing I'm drinking clean water no matter where I am! I love that I can just stick it in my bag. I'm good about cleaning and drying it after each trip."
— Amber W. (5/5)
Excellent.
"Excellent customer service."
— Kristopher T. (5/5)
Love Lifestraw products
"I have used the original Lifestraws but the new smaller straws are amazing!"
— Tracy L. (5/5)
Q&A
After you clean your lifestraw sip by following video for long time storage ( treatment using 1/4 tsp bleach added to 2 cups of water) does one allow the treated lifestraw to air dry completely before storing lifestraw back into case holder?
Hi, Thank you for your question. After cleaning the Sip, wipe the exterior and allow the mouthpiece and bottom plug to completely dry. Reassemble and store upright in its case in a cool, dry location.
Is there any plan for supplying a replacable RO membrane?
At this time, we do not have plans to offer a replacement RO membrane. We understand the interest and appreciate you asking. I have shared this feedback with our team for future consideration.
Does the water have a taste since it goes through stainless steel? I’ve used stainless steel bottles and it changed the flavor.
Thank you for your question. The LifeStraw Sip is made with food-grade stainless steel that is specifically designed not to transfer flavor into the water. Stainless steel bottles can sometimes affect taste if the metal isn’t high quality, if coatings break down, or if the bottle isn’t cleaned well. That isn’t the case with the Sip. The Sip does not contain carbon filtration, so it will not alter the taste by removing chlorine or other chemicals the way a carbon filter would. Most customers describe the taste as clean and neutral because the stainless steel and the membrane materials are non-reactive. If you ever notice anything out of the ordinary, we’re always here to help troubleshoot.
Can this straw be used for hot/warm liquids, such as coffee? Being careful of course if drinking hot liquids so as not to burn your mouth.
The recommended temperature suggestions for our products are: 33 degrees Fahrenheit/1 degree Celsius 140 degrees Fahrenheit/60 degree Celsius
We plan to use the Sip for international travel (2-3 times/year). Any special instructions for cleaning/storing the Sip during the months between trips? Should we replace the straws after a certain period of time even if it hasn’t reached the 1,000 liters limit?
We provide long term care instructions on our website under Product Guides. Here are the instructions: Follow these steps if you have already used your LifeStraw Sip and plan to store for greater than 1 month without use. 1. Remove the top cap and bottom plug. from the LifeStraw sip stainless steel straw. Wash these pieces gently with siap and water. Allow to dry. Place in a sealable container for storage. 2. Mix bleach solution. Prepare a solution of 1/2 tsp of bleach to 4 Cups or 1L of water. Set aside. 3. Add straw and solution to carry case. Place the sip without the mouthpiece and plug inside the open carry case and fill with some of the prepared solution. Close the carry case with the cap. 4. Shake 5 times for 30s each. While holding the cap in place, shake the carry case a series of 5 times for 30 seconds each. Discard bleach solution after each shaking and then refill with new solution. 5. Change solution and let sit for 5 mins.. After shaking 5 times, discard final batch and then refill one more time. Close the cap and place the carry case in a cup or vessel to allow it to remain vertical and let sit for five minutes. 6. Empty and rinse. After five minutes, empty the solution from the carry case. Remove the straw and gently rinse it under clean tap water for 5 mins to remove and leftover bleach 6. Clean carry case and store. Clean the carry case with soap and water. Allow to dry. Backwash by blowing any remaining water through the straw and place the straw without the mouthpiece and plug back in the carry case and close the cap. Store both the sealable container with mouthpiece and plug and the carry case with straw in a cool clean place until ready to resume use. As long as you maintain the filter, you should be able to use it to it's life expectancy.
How do you know when to replace the straw. Is there any indicator
Hi, If cared for properly, your SIP should last up to 1,000 liters or 264gallons. If you take an assumption of someone drinking a bottle of water a day with the straw (0.5 liters), this in principle means the product can last over five years with everyday use. We expect most people will not end up using the product daily, so the lifespan should be even greater than five years. An indicator is that the flow of water becomes less and less over time.
Does the straw indicate when it is no longer effective?
The Lifespan of the SIP is 1,000 liters or 264gallons given proper care. If you take an assumption of someone drinking a bottle of water a day with the straw (0.5 liters), this in principle means the product can last over five years with everyday use. We expect most people will not end up using the product daily, so the lifespan should be even greater than five years. To recognize when the SIP has reached it's end lifecycle, the flow of water will become less and eventually stop.
I am very interested in getting several of these straws for myself and traveling companions. Would this straw make it safe to drink the water in Mexico?
Hi, yes! The LifeStraw Sip is the perfect accessory when traveling! It removes 99.999% of parasites and 99.999999% of bacteria. 99.999999% Here is our data sheet which is provided on our website for all of our products! chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://cdn.shopify.com/s/files/1/2631/0778/files/Sip_Performance_Data_Sheet.pdf?v=1715777942
Can it safely filter out Cryptosporidium and Giardia intestinalis, so that I can take it backpacking instead of using my filter pump?
Yes, the LifeStraw SIP (Safe Instant Purification) filter is designed to safely remove Cryptosporidium and Giardia intestinalis, making it a reliable option for backpacking. The filter uses a hollow-fiber membrane with a pore size of 0.2 microns, which is effective at physically removing these parasites, along with bacteria and microplastics. Both Cryptosporidium and Giardia are larger than 0.2 microns, so they cannot pass through the filter, ensuring your water is safe to drink in wilderness or off-grid environments. This makes the LifeStraw SIP an excellent choice for outdoor activities like backpacking, camping, and hiking, where water from rivers, lakes, or streams may be contaminated. However, it’s important to note that the filter is not designed to remove chemicals, viruses (if present), or heavy metals, so additional precautions may be needed in areas where these contaminants are a concern.
Is there a chart that compares the features of the Sip, the Peak and the Solo straws? I've never used your products but typically carry a water bottle and do little to keep it clean.
We have a page where you can compare the products and types of contaminants they remove. With all products, it is important to keep them backwashed and clean. For ease of use, the Sip may be the best product for your needs!
Your Cart
(0)
You are $75.00 away from free shippingCongratulations, you've got free shipping!