FAQs

Most questions received at Klean Kanteen® are answered below. In order to avoid delays and speed up your answer, please review them to see if your question is answered here.

The Klean Kanteen® Difference

There are so many reusable bottles to choose from. Why should I buy a Klean Kanteen®?

In 2004 when we released the first Klean Kanteen® bottle, the only other options out there were polycarbonate plastic bottles or aluminum bottles lined with plastic resin or epoxy.

The reason Klean Kanteen exists is because we wanted to give consumers a safe, healthy, BPA-free alternative to plastic, a bottle that's reusable, environmentally sustainable and durable enough to last a lifetime. We chose to make our bottle from high-quality, 18/8, food-grade stainless steel, one of the healthiest and most durable materials available.

Some of the key features that set Klean Kanteen® apart include easy to clean rounded corners and threads; high quality, food-grade materials that are BPA-free and don't retain or impart flavors; and durable, all-stainless construction including bottle threads.

We also set up our company and our manufacturing to be environmentally responsible and sustainable from the beginning. We oversee our manufacturing every step of the way, from the sourcing of the basic materials to the retail floor and we're constantly working to cut waste and operate more efficiently.

What kinds of bottles does Klean Kanteen® make and what are the differences?

Klean Kanteen® has four main bottle lines: Kid Kanteen®, Kanteen® Classic, Kanteen® Wide, and Kanteen® Insulated. In addition, we now offer the Kanteen® Reflect, featuring no paint or plastic and stainless unibody bamboo cap, as well as the Kanteen Steel Pint Cup, with the goal of replacing single-use plastic cups. The Kid Kanteen® line currently consists of a Sippy bottle for toddlers. The Kanteen® Classic is the original Klean Kanteen®, the one with the longneck design. The Kanteen® Wide is a wide-mouth bottle with 100% stainless interior, and the Kanteen® Insulated features double-walled, vacuum insulation for amazing insulating performance.

Which is better, stainless or aluminum?

While aluminum is lightweight, it can leach harmful substances and chemicals when it gets hot or comes in contact with anything acidic. Studies have also linked aluminum exposure to Alzheimer's disease. To ensure that the drinks inside aluminum bottles are safe, the bottles must be lined with something.

The most common materials used to line aluminum bottles include plastic resins or baked-on epoxy, both of which can leach BPA and other harmful chemicals or can get scratched, exposing the aluminum underneath. Ceramic is another material used to line aluminum bottles, but it's more rigid and can crack.

Of even greater concern is the fact that many companies won't release information about what the liner on their aluminum bottles is actually made from. The liner can also retain flavors, which can make your drinks taste funky.

The stainless steel used to make Klean Kanteens® is time-tested, safe and completely free of BPA, phthalates, lead and other harmful substances. It's fine for acidic beverages or foods, and doesn't retain or impart flavors. That's why it's the material most commonly used in food preparation and by the brewing and wine-making industries.

Health and Safety

Do Klean Kanteens® have BPA?

No way. Every Klean Kanteen® ever made is totally free of BPA and other harmful substances.

The whole reason we founded this company was because we read the early studies linking BPA to a number of illnesses and we wanted to give consumers a safe, healthy alternative to plastic and lined aluminum bottles.

We chose 18/8, food-grade stainless steel instead of aluminum or plastic because the metal is inherently safe and toxin-free. Stainless steel is made of many elements and minerals that come from the earth, including some of the very same minerals recommended by the FDA as part of a healthy human diet.

Food-grade stainless steel is used in the brewing, food and winemaking industries too. It's the material of choice because it doesn't retain or impart flavors.

All our caps are BPA-free polypropylene (pp#5) too, and we offer stainless steel cap options for Classic bottles as well.

Do Klean Kanteens® have a liner?

No. All Klean Kanteen® products are made from high quality, 18/8, food-grade stainless steel that's totally free of BPA and other harmful substances.

Because stainless steel is inherently safe, we don't need to coat the inside of the bottle with a plastic or epoxy lining, which is one of the main differences between a stainless steel Klean Kanteen® and aluminum bottles.

Why do Klean Kanteen® caps have plastic at all?

Caps made from solid stainless steel would be both heavy and costly. Caps made from safe, BPA-free polypropylene (pp#5)are lightweight and also cost-effective, enabling Klean Kanteen® to create a handcrafted product of exceptional quality at a reasonable price.

In the case of the Sport Cap 2.0, it's also a safety issue because people drink from their bottles while engaging in sports like cycling and running. Polypropylene is very durable, but it's also a softer plastic, which means you're less likely to damage your teeth if you hit a bump on the trail while you're drinking.

On Classic bottles, many people disliked the squeaking of the stainless caps, which are metal-on-metal because of the internal thread design of the bottles. Klean Kanteen® now offers all cap styles for Classic bottles in an all-polypropylene option.

The caps for all Klean Kanteen® Wide bottles have stainless steel on the inside. You can order stainless caps for Classic bottles as accessories in the Flat and Loop style.

Are the polypropylene (pp#5) caps safe?

Klean Kanteen® uses polypropylene (pp#5) because it contains no Bisphenol A (BPA), a chemical that leaches from some kinds of plastic and has been linked to various diseases. Polypropylene has no known leaching characteristics and is softer than other types of plastic.

The caps for all Klean Kanteen® Wide bottles have stainless steel on the inside and stainless cap options are available as accessories for the Classic bottles in the Loop and Flat cap styles.

What is stainless steel and what does 18/8 stand for?

Stainless steel is an iron-containing alloy made from some of the basic elements found on earth: iron ore, chromium, silicon, nickel, carbon, nitrogen and manganese. The properties of the final metal change depending on varying amounts of these elements. More than 57 stainless steels exist and are sold as standard alloys on the market.

Klean Kanteens® are constructed from high-quality, 18/8, food-grade stainless steel. The numbers stand for the percentages of chromium and nickel in the steel, 18% and 8% respectively. Chromium increases the metal's hardness and nickel gives it strength. Together they also make stainless steel highly resistant to stain or rust.

Stainless steel is easy to clean, durable, inert and sanitary. That's why it's the material of choice among the food processing, dairy and brewing industries.

What is nickel and how can it affect my health?

Nickel is a naturally abundant element found in the earth's crust, soil and ocean floor. It is generally resistant to corrosion and is therefore used to make metal alloys such as stainless steel.

Approximately 10-15% of the population is sensitive to nickel, but the health effects of nickel are highly dependent on the manner and degree of exposure. The stainless steel used to make Klean Kanteens® has a low nickel content and is the preferred material used by breweries and dairies.

Do Klean Kanteens have hexavalent chromium, and could I be exposed to hexavalent chromium by drinking from a Klean Kanteen?

Stainless steel does not contain hexavalent chromium; so you don't need to worry about exposure to hexavalent chromium from your Klean Kanteen. Hexavalent chromium has been found in tap water in some municipalities. We recommend that you check with your local water provider and get a copy of their most recent water quality reports. They're public record and should be made available to you upon request. The tests may even be available online.

Does the paint on a Klean Kanteen® contain lead?

No way. When we introduced our colored bottles, we wanted to find a safe and durable paint that also looks fantastic. We reviewed and tested dozens of different paints and selected an acrylic paint that contains no toxins or lead. We test the paint regularly and though it is safe, we recommend the Brushed Stainless finish bottles for small children who like to chew on things.

My child chewed on a Klean Kanteen® and might have eaten some paint. Should I be concerned?

No. The paint on Klean Kanteen® bottles is a nontoxic, acrylic, resin-based finish that's mostly water and is totally free of lead and toxic chemicals. So you've got nothing to worry about if your child ingested some paint! That said, we do recommend the Brushed Stainless finish for small children who like to chew on things..

Manufacturing

Why are Klean Kanteens® made in China?

The very first Klean Kanteen® was created to promote healthy living and respect for the environment by giving people an affordable alternative to plastic and lined aluminum bottles.

Klean Kanteen® has always shared many of the concerns you, our customers, have expressed about manufacturing the bottles in China. Before a single bottle was ever produced, Klean Kanteen® set in place checks and balances to ensure that our bottles are produced safely, sustainably and that the people making Klean Kanteens® are treated well and paid fairly. By manufacturing in China, Klean Kanteen® can provide a handcrafted bottle of exceptional quality at a reasonable price.

Is Klean Kanteen's stainless steel from China safe?

Yes. We have representatives from Klean Kanteen® living in China who visit our factories regularly. They work as liaisons to ensure all Klean Kanteen® products are produced with respect for the environment and that the workers in the factories are safe, protected and paid a living wage. In addition, a rotating group consisting of the owners and various employees visits the factory two to three times a year.

We currently perform regular product testing through third-party, accredited laboratories to meet regulatory requirements and our own high standards for product safety.

Klean Kanteen® is and will continue to be one of the safest and most sustainable beverage containers on the market.

Technical Specifications

How much does a Kanteen weigh?
Klean Kanteen® bottles are lighter than they look. We've tested various wall thicknesses and struck a balance between durability and weight. The stainless steel walls in our bottles are significantly thicker than other, lower quality bottles on the market. They don't dent or bend easily, but they're still lightweight and easy to carry.
Classic Bottles: Wide Bottles: Wide Insulated Bottles:
Capacity
Weight*
Capacity
Weight*
Capacity
Weight*
355ml 106g 355ml 96g 355ml 202g
532ml 145g 532ml 131g 473ml 248g
800ml 174g 800ml 177g 592ml 291g
1182ml 266g 1182ml 209g    
    1900ml 330g    
*doesn't include cap

Using and Cleaning your Klean Kanteen®

Can I fill a Klean Kanteen® with acidic beverages such as apple juice or orange juice?
Yes. Acidic beverages will not corrode or damage the high-quality stainless steel.
Can I use a Klean Kanteen® for milk, breast milk or formula?
Absolutely. Your Klean Kanteen® is food-grade stainless steel, the same stuff they use in the dairy industry.
Can I use a Klean Kanteen® for carrying alcohol?
Yes. In fact, we make a special bottle, the Wine Karafe™, designed just for wine. We've also heard that many people use the 12oz bottles to carry spirits or the 64oz Wide as a Growler for a tasty half gallon of beer.
Do Klean Kanteens® sweat?

It depends on which bottle style you're using.Our Classic and Wide lines are single-walled.If you have a cold drink in them and it's hot out, you're going to have condensation build-up on the bottle.

Our Wide Insulated bottles are made using durable, double-walled construction and vacuum insulation, which has amazing insulating properties. Because they're insulated, these bottles will not have condensation build-up on the outside, regardless of what's inside them or the temperature outside.

The best solution to naturally occurring condensation on Classic and Wide bottles is to put your Klean Kanteen® in an insulated sleeve such as the insulated totes made by our partner, Built®. Whatever size Klean Kanteen® you prefer, there's a Built® tote in a color and style you'll love.

Can I put hot liquids in my Klean Kanteen® or use it like a thermos?

If you have a Kanteen® Wide Insulated bottle, absolutely! Our high-performance, double-walled, vacuum insulated bottles are designed to function as a thermos, a to-go mug and food storage container and will keep contents hot or cold for up to six hours and iced drinks chilly for up to 24.

We do not recommend using single-walled Klean Kanteen® Classic or Wide bottles for hot beverages because you can burn yourself. Warm beverages can be used at your own personal comfort level. They're fine for cold beverages, but unlike the Insulated Kanteen®, condensation will form on the outside.

Can I put my Klean Kanteen® in the freezer?
No. The force of liquids expanding as they freeze can cause your Klean Kanteen® to become deformed and can also break the weld that holds the bottle together, so we strongly advise against it. Freezing any Klean Kanteen® (Classic, Wide or Insulated) will void the warranty against manufacturer defects.
Can I put my Klean Kanteen® on a stove?

In a pinch, single-walled Kanteen® Classic and Wide bottles with the Brushed Stainless finish can be placed on a fire or a stove as long as you take the cap off. Do not do this with a colored bottle, as it will damage the paint.

But it's VERY important that you know what kind of bottle you have because this is absolutely NOT an option with an Insulated Kanteen®. Heating a Kanteen® Wide Insulated will damage the bottle and voids the warranty.

It's pretty easy to tell what kind of bottle you have, even if you've had your bottle so long the logo's worn off. Insulated bottles only come in the wide-mouth design, so if you have a Classic, a bottle with a long neck and a small rolled lip at the edge, you have a Classic. Insulated bottles also have a separate, extra shiny piece at the bottom and come in different sizes (12oz, 16oz, and 20oz) than the single-walled Wide bottles (12oz, 18oz, 27oz, 40oz and 64oz).

How do I clean my Klean Kanteen® and my caps?

Kanteen® Classic and Wide bottles in Brushed Stainless are dishwasher safe. We recommend handwashing colored bottles and Insulated bottles.

Classic Loop and Sport Caps made of polypropylene (pp#5), and the Wide Café Cap are dishwasher safe. The Café Cap is also dishwasher safe and the rotating piece on the top also pops out for thorough cleaning.

All Classic and Wide caps with stainless steel on the inside should be handwashed. The Classic polypropylene Flat Cap should also be handwashed. An easy way to remember is that if your cap is all plastic and hollow on the inside, it can go in the dishwasher. Otherwise, handwash it.

For daily cleaning, just rinse your bottle with warm, soapy water and let it drain and dry in your dish rack with the mouth downward so water can drain out.

For thorough cleaning, you can use warm, soapy water and a bottle brush. We also recommend an old-fashioned cleaner: diluted vinegar or water and baking soda.

I left my Klean Kanteen® in my car and it froze. Now the bottom is bulging out. Is there any way to fix it?

Freezing your Klean Kanteen® voids the warranty because the expansion of the water can put so much force on the steel that it causes it to bulge or even split at the weld. Sometimes nothing at all happens. It depends on whether the cap was on, and how much liquid was in the Kanteen®.

But you're not the first person to accidentally freeze liquid in your bottle. It's still safe to drink from it, and freezing the bottle does not alter the safety or composition of the food-grade stainless steel in any way.

If the bottom of your bottle has become deformed due to freezing, it's usually pretty easy to pop it back into place. First try putting the mouth of the bottle on a flat surface and pushing on the bottom of the bottle with the palm of your hand.

If that doesn't work, flip it over and put the bottom of the bottle on a hard, completely flat surface. Take the cap off and put a board or a book on top of the opening. Then push straight down onto the bottle using your body weight.

In many cases this will flatten out the bottom of your bottle.

You can also use a rubber mallet, but we DO NOT recommend trying to bang out the dents with a hammer as it tends to cause more damage. If nothing you try works, you can also send it back to us and we'll do our best to repair it for you.

I dropped my Klean Kanteen® and dented it. Is there any way to get the dents out?

Klean Kanteen® bottles are made of heavy gauge stainless steel and outperform all other metal bottles in independent tests. But they can dent if you drop them. Our lifetime warranty covers manufacturer's defects only, not damage caused by using our dropping your bottle.

If you dropped your bottle and dented it, odds are the dent is inward. In some cases you can put a wooden dowel or a wooden kitchen spoon inside the bottle and tap on the other end with a hammer to push the dent out. DO NOT use a metal object to bang the dent outward as the metal can get inside your Kanteen®. You can also further damage or even puncture your bottle.

Even if you've dented your bottle, it's still totally safe and free of harmful substances. Because every Klean Kanteen® made if 18/8 food-grade stainless steel through and through with no liner on the inside, a dent, no matter how large, will not change the composition of the metal.