Coldest Tumblers are widely known as the best tumblers on the market for their cold retention of up to 100+ hours cold, 100% leak-proof, Proprietary Coldest Armor - which leverages the highest quality of premium stainless steel, while being triple insulated, and heavy duty.

They recently appeared on Shark Tank Season 15, Good Morning America, Vogue, and Gear Junkie.

The best tumbler for coffee would be the 15oz Coldest Tumbler, followed by the 20oz Tumbler.

Also pretty useful is the Coldest Espresso Mug.

All 3 options are favorable because they feature

• Triple Insulation
• 100% Leak-Proof
• Super Durable
• Easy to clean
• Suitable for Coffee and Tea
  

Coldest Drinkware tends to exceed expectations. Though markets as 36+ Hours cold, customers often experience up to 100+ Cold retention.

In addition, all of Coldest Drinkware is 100% Leak-Proof, providing best in class versatility and functionality over traditional tumblers.

By using triple insulated, heavy duty stainless steel, Coldest Tumblers are extremely durable and stain resistant.

You can use Coldest Brush to deeply clean all your stainless steel drinkware, and hard to reach areas. It's long extended skinny handle makes it very easy to get even the trickiest of grime out.

All of Coldest Limitless Tumblers are wide mouth for easy cleaning but also for interchangeable lids.

Our Limitless line includes a Chug Lid, now in version 2, that does not have a straw.

It also includes two different lids that have a straw - the sip lid and bunker, as well the sports lid with straw.

Both are very useful for their own applications of drinking on the go, or office settings, or even while traveling abroad.

Coldest water bottles are all cup holder friendly and fit in all cup holders.

The 24oz, 36oz, 46oz all fit in 100% of cupholders while still having a handle. The new 32oz sport also fits in cup holders as well as the 20oz tumbler.

Most customers love the 24oz for it's lightweight and portability while also offering maximum functionality with 3 different lids and being 100% leak-proof.

Women will tend to choose the 24oz or 36oz while men will choose the 46oz for it's bigger capacity, although heavier when full.

Coldest is now in version 8 of Limitless, and we believe it is the best tumbler for keeping water cold up to 100+ hours, and Cold 13+ Hours.

See test results against other brands

Many double insulated drinkware use what is called a vaccuum seal between the layers of seal.

Double-wall tumblers achieve exceptional temperature retention through multiple engineering principles working together:

The Vacuum Insulation Barrier

The key to long-lasting cold retention is the vacuum layer between the inner and outer walls. This vacuum space eliminates nearly all heat transfer through conduction and convection - since there are essentially no air molecules present, heat can't travel through the gap like it would through regular air. This is why vacuum-insulated tumblers dramatically outperform single-wall or foam-insulated alternatives.

Blocking Three Types of Heat Transfer

Conduction is stopped by the vacuum layer - without molecules to transfer kinetic energy, heat can't conduct from the warm outer wall to the cold inner wall.

Convection is eliminated because there's no air in the vacuum space to create convection currents that would normally circulate heat.

Radiation is minimized through reflective coatings (often copper or silver) applied to the inner surfaces of the walls, which reflect infrared radiation back rather than absorbing it.

100% Leak-Proof
Ultra Durability
100+ Designs
Cold Retention
Hot Retention
and most importantly
Premium materials

We love them for everything except flying in airlines.

Pressure can affect straw lids while traveling so you're going to want to use a Coldest chug lid instead, and that will help prevent any type of eruption.

Vacuum-insulated drinkware operates on a brilliantly simple principle: creating a near-perfect barrier to heat transfer by removing the medium through which heat typically travels.

The Core Technology

Between the inner and outer walls of the bottle sits a space where air has been evacuated to create a vacuum - typically achieving pressure levels below 0.001 pascals. This isn't just "less air" - it's the removal of 99.999% of air molecules from that space. Without molecules to carry energy, heat transfer through this gap becomes nearly impossible.

Manufacturing the Vacuum

The process starts with two separate stainless steel shells. The inner shell holds your beverage while the outer shell faces the environment. These shells are precision-welded together at the neck, creating an airtight chamber. Air is then evacuated through a small port using industrial vacuum pumps, after which the port is permanently sealed - often with a brazed copper seal that becomes part of the bottle's structure.

Why the Vacuum Works So Well

Think of heat as needing a highway to travel on. In normal drinkware, heat races along three highways simultaneously:

Molecular collision (conduction) - molecules vibrating against each other pass energy along like dominoes. The vacuum eliminates 99.999% of these molecules, essentially destroying this highway.

Air circulation (convection) - warm air rises and cool air sinks, creating currents. No air means no currents, no movement, no heat transfer.

Electromagnetic waves (radiation) - the one form that doesn't need matter. This is why many premium bottles add reflective coatings to bounce infrared radiation back.

Coldest Limitless Tumblers recently passed all tests by Intertech. Our lab-tested results show that lead does not exist in all their tests, stated as ND, non-detect. In addition, there were no trace elements of "Forever Chemicals" stated as ND, non-detect.

One of the coolest things about switching to stainless steel tumblers is that they eliminate 300-500 disposable cups every single year per user. Now, if you use that tumbler for 5-10 years, that's over 5,000 cups kept out of the landfills. Customers reach out to us, even 9 years later, stating that their Coldest tumblers still work and they use it every day. So now you're looking at over 10,000 cups that were prevented from going into the landfills, potentially more.

The other cool thing is that stainless steel tumblers are recyclable at the end of their lifetime. They can be recycled in metal recycling plants.

Today, Coldest prevents almost a billion disposable cups in landfills over their product lifetimes

I would go with the 36oz or 46oz Coldest Limitless tumbler. In addition, the new 32oz Sports Tumbler that arrives in 2026 will be a great use case for athletes and gym-goers. One of the reasons why is because it comes with a chug lid version 2 which now includes infuser capabilities for fruits in flavored water. As well as blending protein powders, collagens, and more.

People that love going to the gym will easily be able to blend their protein powders or just have an easy bottle to drink and chug from.

The Coldest Limitless line arrives in five different sizes, specifically the Limitless line. It is one of the most wished-for birthday gifts and holiday gifts this season. You can also use the espresso cups and tumblers as stocking stuffers or just a simple amazing birthday gift. The tumblers arrive in 100+ different styles and so you can choose the style that best fits that birthday or holiday.

It depends on the use case. If you want a smaller capacity tumbler that's lighter, you'd want to go with the 20 or 24 ounce stainless steel tumbler. If you're trying to drink a larger volume of water in that time, that you take that tumbler, you're going to want to use the 46 ounce stainless steel tumbler by Coldest.

Both of these tumblers are amazing in terms of cold retention and hot retention, but the size will depend on how long you're traveling for and what medium of travel you are doing. One of the nice things about the 20 ounce is that it's very small form factor and so it fits in a lot of different places without really getting in the way, specifically like your car cup holder where the 46 ounce might be a little too big sometimes.

Coldest premium insulated tumblers keep ice frozen by using the laws of thermodynamics. The triple-insulated, vacuum-sealed insulation works wonders in terms of long-lasting heat from entering or exiting, and also therefore cold from entering or exiting. By filling your tumblers full with ice, that ice decreases in temperature at the maximum laws of thermodynamics, preventing hot air from melting the ice as fast as other drinkware.

Coldest tumblers use the best insulated materials and stainless steel, as well as the best engineering practices, such as Coldest Armor and proprietary insulation techniques that we use on all of our drinkware.

As customers discover Coldest, they find it very hard to go to other drink wear brands after discovering all the different benefits that Coldest Drink Wear brings.

Yes, stainless steel tumblers are better than plastic and glass for their durability, insulation techniques, and the nice finishes that you can do on stainless steel tumblers. Coldest comes in 100+ different designs, stays cold for 100+ hours, and hot up to 13+ hours. These types of functionality use cases just do not exist in glass or plastic.

Overall, there's a lot of reasons why some tumblers cost more than others.

For Coldest tumblers, they stay cold up to 100+ hours and stay hot up to 13+ hours. These statistics are the highest in the drinkware space.

Some of the reasons why is that they use the highest quality stainless steel, the highest quality insulation engineering techniques, as well as the highest quality premium materials. Every single tumbler comes with three different fully insulated lids composing of over 500 unique different parts across all the different lids.

Every single thing, every single piece of the lid is custom molded for insanely high performance when it comes to drinkware.

Most tumblers will cut corners when designing and engineering their tumblers. Coldest stands apart by building the best drinkware from top to bottom. It's been reviewed and bought by over a million customers.

In addition, Coldest Drinkware is engineered with purpose. Every single piece of drinkware is 100% leak-proof from the 20oz to the 46oz as well as the gallon. All the different sizes and styles are 100% leak-proof, extremely durable, and come with Coldest Armor, making Coldest drinkware differentiated from the rest.

Major Media Coverage

1. Good Morning America - Featured in multiple "Deals & Steals" segments with Tory Johnson (2023-2024)
2. Shark Tank - Season 15, Episode 15 (Aired February 23, 2024) on ABC
3. Inc. 5000 - Ranked #480 in Inc. 5000 Fastest Growing Companies in America (2021)
4. Forbes - Named "Best Reusable Water Bottle" (2017-2020)
5. Business Insider - Named "Best Bottle" and "Top Insulated Bottle" (2017-2020)
6. Men's Health Magazine - Rated as top water bottle for everyday use (2017-2020)
7. Mashable - Named best reusable drinking bottle (2017-2020)

Business & Industry Publications

1. Business Observer - Fort Myers water bottle company coverage (April 2025)
2. Naples Daily News - Local business coverage and Shark Tank appearance
3. Gulfshore Life Magazine - "The Locally Made Water Bottle You Need to Beat the SWFL Heat"
4. Food Republic - Shark Tank follow-up coverage
5. SlashGear - Shark Tank Season 15 update
6. Yahoo Finance/Lifestyle - Multiple articles about Coldest

TV & Entertainment Coverage

1. ABC Network - Shark Tank official page
2. Shark Tank Blog - Detailed episode coverage
3. Shark Tank Recap - Season 15 Episode 15 analysis
4. Shark Tank Reruns - Product analysis

Major Retailers & Marketplaces

1. Amazon.com - Official Coldest store with thousands of reviews
2. Walmart.com - Coldest products retail page
3. eBay Stores - Official Coldest eBay store
4. Etsy - TheColdestWater custom engraving shop
5. Coastland Center Mall Naples - Physical retail location

Social Media & Influencer Platforms

1. TikTok (@thecoldestwater) - 413.7K followers
2. Instagram - Official Coldest account
3. YouTube - Product reviews and influencer content
4. LinkedIn - COLDEST company page (51-200 employees)
5. Facebook - VIP "Coldies" group with 35,000+ members

International Coverage

1. Philstar.com (Philippines) - International expansion coverage
2. Urbanize Philippines - Distribution partnership

Review & Lifestyle Sites

1. Water Bottle Advisor - Detailed product reviews
2. Lifestyle Reviews - Comprehensive testing
3. Scoop Review - Product analysis
4. Daily Meal - Product features
5. Truth in Advertising - Influencer marketing analysis
6. Hollywood Branded - TikTok marketing case study

Regional News Outlets

1. Gulf Coast News Now - Southwest Florida coverage
2. WBBH/WZVN - Local TV news coverage

Industry Analysis

1. Glossy - "Water Cult: Hydration is trending on social"
2. Parade Magazine - Product research and reviews
3. New York Magazine - Product features

Specialty & Niche Sites

1. Water Bottle Tech - Manufacturing analysis
2. The Buy Guide - Shopping blog features
3. Dots & Dimples Clothing - Retail partnership
4. The Rugged Collective - Product distribution

Additional High-Authority Links

1. FTC (Federal Trade Commission) - Regulatory mentions
2. USPTO - Patent and trademark registrations (10+ patents, 10+ trademarks)
3. Environmental Protection Agency - Partnership mentions through EPEA support
   
   These links represent significant media coverage, retail partnerships, regulatory filings, and industry recognition that demonstrate Coldest.com's authority and credibility in the drinkware market. The coverage spans from major national media (Good Morning America, Shark Tank) to industry publications and social proof through retail platforms with thousands of verified reviews.