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Best Insulated Water Bottles of 2021: Complete Reviews with Comparisons

Insulated Water Bottle Buying Guide

In 2021 lots of people are now more concerned about their health and well being than ever before.

Apart from getting into an exercise regimen and eating wholesome, nutritious food, people are also getting more conscious about certain items they need, like a quality water bottle.

Water bottles come in many types and one of them is the insulated water bottle.

Insulated water are a top pick for many individuals, including athletes and health-conscious individuals.

A well designed insulated bottle keeps the temperature of its liquid content at its best, meaning you can have cold water or a hot drink anytime you need without requiring access to a refrigerator for cool or electricity for heat.

The best insulated water bottles can be bought in sports gear stores and online.

Choosing the best insulated water bottle model that will suit your needs can be a bit of a challenge due to the influx of water bottles coming from different brands in recent years.

Each person differs in lifestyle. Thus, what one person needs from insulated water will be different from the next individual. 

Our complete guide to insulated water bottle will give you information about how to choose the an insulated water bottle, the answers to some commonly asked questions, and reviews of the best of the best insulated water bottles on the market in 2021.

Comparison Chart

Polar Bottle Insulated Water Bottle - 24oz
Polar Bottle Insulated Water Bottle
CamelBak eddy Insulated Water Bottle,
CamelBak eddy Insulated Water Bottle
Fluid Sports Stainless Steel Insulated Water Bottles
Fluid Sports Insulated Water Bottle
Glacier Point Vacuum Insulated Stainless Steel Water Bottle
Glacier Point Vacuum Insulated Water Bottle
SWIG SAVVY Stainless Steel Water Bottle
SWIG SAVVY Insulated Water Bottle

Best Insulated Water Bottle Reviews

1. Polar Bottle Insulated Water Bottle

Polar Insulated Water Bottle 24oz

An insulated water bottle will keep your cold or hot drinks at their best temperature for extended time periods.

Now if you are on the hunt for an insulated water bottle that constantly maintains the temperature of your drinks for a longer period of time, you have to check out this model from Polar Bottle.

What's to like about the Polar Bottle Insulated Water

It has a double-wall construction which is merged with a thermal barrier.

The triple layer then keeps the cold while preventing the onset of heat on the bottle.

The bottle is made with superior, durable plastic material free from dangerous BPA and phthalate contaminants.

The bottle features a broad mouth and allows users to add in ice cubes without trouble. It can also fit into regular bicycle bottle cages.


  • Has working double-wall construction
  • Has expansive mouth
  • Can fit majority of bicycle water bottle cages
  • BPA and phthalate-free


  • Can get mold or mildew if not cleaned immediately
  • Cannot fit smaller frames of bicycle cages

2.CamelBak eddy Insulated Water Bottle

CamelBak eddy Insulated Water Bottle

Do you imbibe plenty of water every day to keep you hydrated? Are you on the hunt for a water bottle that will maintain the temperature of its contents? Then you might want to check out the CamelBak eddy model.

What's to like about the CamelBak eddy Insulated Water

CamelBak makes use of high-quality materials to make their water bottles. The eddy has durable qualities, it is BPA-free and--of course-very portable.

It includes a Bite and Sip valve capable of creating a higher level of water or liquid circulation.

It also includes a built-in handle for hassle-free transportation.

It can be cleaned in a dishwasher and is backed by a limited lifetime manufacturer’s warranty.


  • Excellent spill-proof design
  • Features that make water flow faster
  • Includes built-in handle for extra convenience


  • Some users find the bite and sip feature impractical
  • Some complained it's not easy to clean
  • Drinking through straw can be a little awkward at first

3. Fluid Sports Insulated Stainless Steel Water Bottle

Fluid Sports Insulated Stainless Steel Water Bottle

Fluid Sports’ Insulated Stainless Steel Water Bottle is something that you should try out in case you are looking for an insulated water bottle of the stainless-steel kind.

What's to like about the Fluid Sports Insulated Stainless Steel Water Bottle

This Fluid Sports bottle is non-toxic and BPA-free, which is another advantage of stainless steel. The materials are less likely to be polluted with dangerous toxins, so it is safe for children to use every day.

Stainless steel comes from natural elements, so these bottles are easier to recycle. The material is durable as well so it is a popular choice for athletes, hikers, and sports enthusiasts. 

Containers that are made with stainless steel are also capable of withstanding extreme weather conditions too plus they are more scratch-resistant.

When you want safer drinking water without worrying about chemicals, this Fluid Sports model is for you. Apart from it being a safe product, it also features dual-walled, vacuum-sealed attributes for top notch insulation.


  • Excellent insulation properties
  • Durable and hardwearing
  • Easy to clean and maintain
  • Does not retain tastes and odors
  • BPA-free and non-toxic


  • Caps can leak
  • Flip-top lid design issues

4. Glacier Point Vacuum Insulated Stainless Steel Water Bottle

Glacier Point Vacuum Insulated Stainless Steel Water Bottle

Glacier Point’s Vacuum Insulated Stainless Steel Water Bottle amassed great feedback due to its excellent capability of retaining the temperature of its liquid content at its optimal best, whether hot or cold.

What's to like about the Glacier Point Vacuum Insulated Stainless Steel Water Bottle

This vacuum insulated bottle is recommended not only for athletes and active individuals, but for the routines and lifestyles of people from all walks of life.

It retains a dual-walled construction for excellent insulation.

It is designed to keep cold drinks cold for up to 24 hours and hot drinks warm for up to 12 hours. This is longer than similar plastic containers and other insulated stainless steel bottle models.

Like the other bottles reviewed her, this one is made with BPA-free food-grade stainless steel material, which makes it a safe item for kids to use every day.


  • BPA-free and non-toxic
  • Designed with medium mouth opening
  • Includes free sports cap
  • Backed by limited lifetime warranty


  • Straw can become loose with use
  • Caps can break with use
  • With time logo paint can smudge

5. Swig Savvy Stainless Steel Insulated Water Bottle

SWIG SAVVY Stainless Steel Water Bottle

The Swig Savvy stainless steel insulated water bottle has been commended for its dual-walled construction and superior temperature retention.

It can keep your drinks hot or cold for plenty of hours. This is designed mainly to keep your beverages cooler for an extended period of time.

What's to like about the Swig Savvy Stainless Steel Insulated Water Bottle

One primary advantage of this product is its top-notch insulation at an affordable price point. 

Due to the bottles dual-wall insulation, you can stash the item in your bag or backpack without worrying about condensation or damage to paper products and electronic gadgets inside the bag. This is a very durable product as well, and includes a lifetime warranty.

You can keep your drinks colder by putting ice in it too, which is possible due to its wider mouth.

While the bottles wider design will not suit many cup holders, it will be able to contain a larger amount of well-insulated beverage. The product offers great value for your money and is best if you are someone that needs their beverages to remain cool, or hot, depending on the situation for hours at a time.


  • BPA-free
  • Ergonomic design
  • Durable


  • Caps included were designed poorly
  • Cleaning under rubber O-rings was tricky

Top Ten Best Selling Insulated Water Bottles

Insulated Water Bottle Buyer's Guide

Insulated Water Bottle Features

An insulated water bottle has a slew of extra features. Based on where you plan to use the item or when you need to use it, here are several features that made the item appealing to a lot of consumers.

1. Leak-proof

Water bottles are not exactly tip-proof, and it can be a pain to see that your bottle fell over, its contents spilled out and ruining the table or items around it.

Hence a model that is designed to be leak-proof is always a welcome feature.

As mentioned earlier, insulated water bottles are condensation-free to maximize protection. You must guarantee that the bottle’s lid mechanism can prevent the content from trickling out.

2. Durability

Based on the way you will be toting your insulated water bottle and where you are going to carry it, you may have to take into consideration a model’s durability.

Stainless steel and sturdy plastic bottles are recommended for children’s use.

Water bottles are often used as a travel accessory. Thus excellent durability is a huge factor when it comes to the quality of an insulated water bottle.

3. Convenience

Water bottles have features made for the users' convenience.

These items include:

  • clip fasteners
  • name tags
  • handles
  • rubber grip

4. Straw

Lots of insulated water bottles include a straw these days and why they were included on the item, companies do have their reasons.

Models with straws are recommended for busy people who are always traveling, and the item will also work well with children since they can take drinks from it without having to unscrew the lid on and off, again and again.

Straws also makes for convenient, mess-free drinking.

5. Eco-friendly

People are more enlightened about the state of the environment today so they have stopped buying disposable bottled water and have begun using an insulated one that they can use over and over.

A model that is BPA-free and non-toxic is a great item to start with if you haven’t tested out insulated water bottles yet.

Glass and stainless steel are materials that are considered environment-friendly, so if you want to minimize your carbon footprint, you can choose either material for a water bottle.

Advantages of an Insulated Water Bottle

Monitored hydration is an excellent and valid reason to invest in a good model, but you probably never realized that you will get additional benefits from the item, including the following.

Enhanced health and well being

Our bodies are made up of mostly water. It is not shocking to know that imbibing more of it has a profound impact in lots of areas.

Drinking 8 glasses of water each day, you will see eventual improvement on the quality of our skin, fewer allergy attacks and more.

Weight loss

Proper hydration is it can help you lose weight.

Drinking water provides you energy to be more active. By drinking a big glass of water after every meal, you can feel completely full.

You will also cut lots of calories when you choose water over sugary drinks like sodas.

Accommodates a bigger range of drinks

If you use a bigger-sized insulated water bottle, you can take hot and cold beverages anywhere you go in an accessible and convenient manner.

You can have your choice of drink from teas, coffees, milk, frozen beverages and more.

Helps you save money

If you have a habit of buying disposable bottled water from convenience stores and groceries, the money you spend on it adds up.

The bottled water industry now is worth billions, and consumers fork out thousands of dollars on bottled water for convenience alone.

When you have your own insulated water bottle, you do not have to spend so much on water bottles because you already have one on hand whenever you need it.

Makes for tidier homes or offices

One of the best features of insulated water bottles is that they often have anti-condensation properties.

Even when the bottle is filled with the coldest drink, it will not produce “sweat” — thus your workspace, kitchen table or any surface will be kept clean and mess-free always.

Insulated Water Bottle FAQs

1. How to clean an insulated water bottle?

Just like any other equipment, an insulated water bottle should be cleaned regularly so it works at its best and provides you with longer service. Maintenance is always a must and you should allot time and effort to give proper care to the item.

Here are some easy steps on how to clean the equipment.

A stainless steel insulated water bottle needs to be washed manually. You have to be careful not to just throw them in the dishwasher.

The extreme temperature inside dishwashers will ruin its integrity, and it will not turn out as clean as it would hand wash them. You can perform the procedure once a week and give them a thorough cleaning.

The most effective cleaning solution for insulated water bottles is a mix of vinegar and water.

Even though you can use detergent, it is not always recommended, as the cleaner might give off an odd taste.

You must dispense the water and vinegar solution in the item and let it sit for approximately 20 minutes.

After steeping the bottle, you can clean it with a brush that will fit inside the bottle. The brush should be capable of lifting and taking away any dirt and grime buildup.

Allow the bottle to dry for an hour or more on the rack, and you’re done.

2. How do insulated water bottles work?

As soon as the bottle is dispensed with a cold beverage, its temperature is maintained by a double wall built inside to produce a vacuum. The presence of this vacuum means air will not get to the liquid hence it will retain the optimal temperature of the content.

The traditional design of insulated bottles feature a layer of glass located inside however due to modern upgrades, the glass was replaced with stainless steel.

The glass used in older insulated bottles performs exceptionally well when it comes to preserving the content’s temperature however it was vulnerable—glass can break when the item is accidentally dropped or bumped. A broken glass means the water bottle will be useless and must be replaced (if you want geek out on the details of the origin of isulated bottles then you won't want o miss the video below)

These days it is more common to see plastic and stainless steel insulated water bottles compared to glass ones. They are durable and last longer too.

3. Are insulated water bottles dishwasher safe?

It depends. 

Generally you should place a stainless steel insulated water bottle in the dishwasher because it may damage the bottle's coating.

For plastic bottles, it's recommended to check the manufacturers instructions for the specific brand you are looking to clean. Most water bottles come with care and cleaning instructions.

4. Is it safe to drink out of an insulated water bottle?

Choosing a BPA free water bottle, if it's plastic, or a stainless steel model are both safe for your drinking requirements.

With that said, like any product you use for health, it is important that you clean your water bottle regularly. See FAQ #1 above for tips on keeping your water clean and safe.

Wrapping Up

There are numerous choices of water bottles available for you to choose from.

The options come down to whether you want a stainless steel water battle or a BPA free plastic water insulated water bottle.

In our tests, the stainless steel insulated bottles tended to keep liquids cool for longer and hot for longer too. 

When you are looking to add hot liquids to your water bottle, definitely choose a stainless steel model.

Additionally, if you are adding any scented or flavorful liquids to your water bottle stainless steel does not retain the odor or taste because it protects from the transfer of flavors.

The disadvantage of the stainless steel bottles are they are not recommended to be cleaned in your dishwasher so your maintenance of the bottle will be more of a hassle than plastic bottles. The trade-off is temperature stability performance for ease of cleaning.

Many of the bottle models, especially the one the top 10 best seller list are differentiated by their caps: Do you want a spout, a straw, or a wide mouth? So, choose your bottle material then narrow your options by the type of cap you prefer.

Drink up and keep hydrated on your next adventure!