Color Availability
*PLEASE NOTE: Elle Pink, Guy Green, Harper White, Hartley Black & Sandy Silver ships immediately. Other Colors ship in Late April.
Splitflask Tighter Seal Gasket
Splitflask Tighter Seal Gasket

Splitflask Tighter Seal Gasket

✔️ DUAL CHAMBERS
✔️ VACUUM INSULATED
✔️ HOT & COLD SIMULTANEOUSLY
Regulärer Preis $0.00 USD

Does it leak?

No. With the leakproof lid aligned properly, your Splitflask will not leak or mix both sides.

How long does it stay hot/cold?

With a hot drink on one side and a cold drink on the other, the hot side stays hot for up to 2 hours while the cold side stays cold for up to 4 hours.

If both sides hold hot or cold drinks, you’ll get up to 4 hours of heat or up to 8 hours of chill.

Shipping Information

We offer tracked and insured shipping for all of our orders. Order processing takes 1-3 business days before shipment.

Free Returns

Start a return by getting in touch with our team at hello@splitflask.com

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“As someone who needs caffiene *and* hydration on the go, this tumbler is a game-changer. The dual chambers keep my coffee hot and water cold for hours. Genius idea!”

– Hayley Zovickian, Buzzfeed

  • Hot & Cold Drinks Hot & Cold Drinks
  • DISHWASHER SAFE DISHWASHER SAFE
  • Both Sides Don't Mix Both Sides Don't Mix
  • Spill Proof Spill Proof
  • Ergonomic Design Ergonomic Design
  • Dual Chambers Dual Chambers
  • Hot & Cold Drinks Hot & Cold Drinks
  • DISHWASHER SAFE DISHWASHER SAFE
  • Both Sides Don't Mix Both Sides Don't Mix
  • Spill Proof Spill Proof
  • Ergonomic Design Ergonomic Design
  • Dual Chambers Dual Chambers

The 2-in-1 tumbler that carries your hot and cold drinks

Dual Chambers

Bring two drinks with you in one cup.

Vacuum Insulated

Enjoy hours of temperature retention.

Dual Sip Lid

Sip from each side easily without switching the lid.

No More Juggling

Forget about the days of carrying multiple cups.

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Lover By Drew Barrymore

"No more double-fisting your drinks"

– Drew Barrymore.

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Lady abut to drink from a Stainless steel Splitflask tumbler

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Frequently asked questions

Des it leak?

Nope. The lid is 100% leakproof when closed—tested in gym bags, cars, and tote bags.

How long does it keep drinks hot or cold?

12 hours hot. 24 hours cold. Each side maintains its own temp.

Is it dishwasher safe?

Yes! The entire tumbler is top-rack dishwasher safe.

Can I put coffee and water together?

Absolutely. They’ll never mix—unless you want them to.

Is it BPA-free?

Absolutely. Every material is 100% BPA-free and food-grade safe.

Fits Like a Glove in Most Car Cup Holders

No more tumblers wobbling around like they’re auditioning for a rodeo. Splitflask’s cleverly tapered shape slides right into your cup holder—keeping your drink duo secure, spill-free, and ready for your next road trip. Buckle up and sip easy!

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Dishwasher-Friendly? Check!

Because who has time for hand-washing? Toss Splitflask onto the top rack, close that dishwasher door, and go about your day. Your tumbler comes out sparkly clean—no scrubbing needed, no fuss given. Now that’s convenience.

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Green life
Green life

Eco-Friendly Choice for Conscious Living

Choosing Splitflask means choosing sustainability. By reducing single-use plastics, you're not only enjoying convenience but also making a positive impact on the planet. Feel good with every sip.

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HOW IT WORKS

Simply pour your drinks into each chamber one at a time.

Place the lid with the straw side over your cold drink and the spout side over your hot drink.

Lift the straw to sip your cold drink or the spout to swig your hot drink.

Splitflask features callout
Splitflask features callout

Special Features

  • 1. Flip the straw for the perfect sip.
  • 2. See-through cover for a clear view of your beverages.
  • 3. Lift the flap for delightful gulps.
  • 4. Food grade 18/8 stainless steel core.
  • 5. Double wall vacuum insulated separation of compartments.
  • 6. Right (gulp) chamber ideal for hot beverages.
  • 7. Left (sip) chamber ideal for cold.
  • 8. Food-grade silicone straw.
  • 9. Built-in silicone base for protection and noise-dampening.

❤️ Risk-Free 30-Day Splitflask Guarantee! ❤️

Try the Splitflask, the innovative tumbler that lets you carry hot and cold drinks in one. Enjoy your perfect beverage temperatures, risk-free, with our 30-day money-back guarantee. Experience the convenience and sustainability, and if you're not satisfied, return it for a full refund. Act now and simplify your drink routine!

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More Items

The Best Hot and Cold Tumbler

Welcome to the dynamic world of hot and cold tumblers! Whether you're sipping on a hot latte or a refreshing iced tea, or both, the right tumbler can make all the difference. This guide will delve into the essentials of hot and cold tumblers, exploring their evolution, types, and Splitflask is the best hot and cold tumbler for your needs.

Definition and Overview

A hot and cold tumbler is a versatile container designed to maintain the temperature of your beverage – hot or cold, for a long period of time thanks to its insulated construction. It's an indispensable accessory for anyone looking to enjoy their favorite beverages on the go.

Evolution of Tumblers for Temperature Retention

Tumblers have come a long way from their humble beginnings in 1913, when they were invented by William Stanley. Today, modern tumblers are marvels of insulation technology, offering superior temperature retention and durability, making them ideal for both hot and cold drinks.

Types of Tumblers

The world of tumblers is diverse, with each type catering to specific preferences, applications and needs.

Varieties with Straws and Lids

Hot and cold tumblers with straws and lids are a popular choice for their convenience, versatility, and enhanced insulation efficiency they offer. They're perfect for those who are constantly on the move, providing an easy way to enjoy your drink without spills or leaks.

Material Comparison

The choice of material is crucial in determining a tumbler's effectiveness.

Stainless Steel vs. Plastic Tumblers

Stainless steel tumblers like the Splitflask are celebrated for their durability, robustness and superior insulation, while plastic tumblers offer a lightweight and often more economical alternative. However, they may fall short in comparison when it comes to maintaining temperatures and aesthetics.

Finding the Best Tumblers

Choosing the right tumbler for both hot and cold drinks requires careful consideration of several factors. We've made that choice easier by creating a tumbler that carries and maintains the temperatures of hot and cold drinks at the same time.

Best Tumblers for Both Hot and Cold Drinks

Unless you don't mind the inconvenience of having to carry two tumblers when you need your hot and cold drinks at the same time, the the clear and only choice is Splitflask. Splitflask–the best tumbler for both hot and cold drinks features top-notch insulation, a durable build, and a lid design that not only is leak proof, but is also mix proof and allows you to sip independently from each side.

Essential Features of Tumblers

Knowing what features to look for can guide you in selecting the perfect tumbler.

Features to Look For

Features like temperature retention time, volume, BPA/BPS-free, leak-proof lids, ergonomic designs, and the quality of the seal are all important factors to consider when selecting the best hot and cold tumbler for your needs. These contribute to the tumbler's efficiency in maintaining the desired temperature. Splitflask checks all those boxes and more.

How Tumblers Maintain Temperature

The magic of temperature retention in tumblers lies in their vacuum insulation technology. Understanding this science can help you appreciate their design and make a more informed purchase.

Science Behind Insulation

Most high-end tumblers like Splitflask use double-wall vacuum insulation, an effective method of reducing heat transfer, thereby maintaining the internal temperature irrespective of the external environment. But unlike all other hot and cold tumblers on the market, Splitflask goes a step further by incorporating an additional double-wall vacuum between the left and right insulated chambers to prevent temperature transfer between both chambers.

Comparison with Regular Bottles

Insulated tumblers surpass regular non-insulated bottles in their ability to keep drinks at a consistent temperature for long periods of time, thanks to their specialized design and construction focused on thermal retention.

Hot and Cold Tumbler Brands

The market boasts a variety of brands, each offering unique features and technologies. All brands pretty much offer the same (or variations of the same) features except Splitflask which offers a patented dual chamber feature never before seen on the market.

Leading Brands in the Market

Brands like Yeti, Hydro Flask, Contigo, and Thermos are household names in the tumbler world, each bringing their own flair to the table. But not of them can offer the dual beverage option that Splitflask offers.

Brand-specific Features and Technologies

Understanding the unique features and technologies of these brands can help you zero in on the tumbler that best suits your requirements. All brands on the market offer similar features, making Splitflask a standout brand with its dual-chamber design.

The Versatility of Tumblers

Tumblers are incredibly versatile, suitable for a wide range of beverages. Thanks to their stainless steel construction, they are quite adept at living up to their promise.

Suitability for Various Drinks

Whether it's keeping your morning coffee hot or your water cold, tumblers are designed to handle various drinks, one drink at a time, thanks to their insulated properties. Splitflask is designed to handle two drinks at a time.

User Experiences

User experiences often underline the practical benefits of tumblers in daily life. Their widespread use is a testament to their versatility and convenience with millions of hot and cold tumblers being sold ever year in America alone.

The Best Tumbler for Temperature Retention

To find the best tumbler for temperature retention, consider factors like insulation quality, material, design, and user reviews.

Expert Recommendations

Experts often suggest opting for tumblers with double-wall vacuum insulation for the best temperature retention. The material and seal quality are also important considerations. Splitflask offers double-wall vacuum insulation and an airtight seal for your convenience.

Consumer Ratings and Feedback

Consumer ratings and feedback are invaluable for understanding the real-world performance of different tumblers. Splitflask reviews help to highlight aspects like temperature maintenance, durability, and convenience.

Advantages of Insulated Tumblers

Insulated tumblers offer several benefits, making them an optimal choice for both hot and cold drinks.

How Insulation Works

Insulation in a tumbler works by creating a vacuum barrier against heat transfer. The vacuum between the Splitflask tumbler walls is devoid of air molecules which prevents heat from escaping or entering each chamber, simultaneously maintaining the drink's temperature in each chamber.

The Purpose of Insulated Tumblers

Insulated tumblers are designed not just for temperature retention but also to promote a sustainable and eco-friendly lifestyle. They reduce the reliance on plastic disposable cups and water bottles, thereby minimizing waste and environmental impact. With Splitflask, you get to double you environmental impact. It's not just about the convenience of having your drinks at the right temperature; it's also about making the best eco-friendly choice.

The Splitflask Convenience

The Splitflask insulated tumbler is designed for maximum convenience. It is leak-proof & mix-proof, easy to carry, dishwasher safe, BPA/BPS-free, fits well in most cup holders, reduces twice as much single-use plastic, and allows you to carry 2 drinks in 1 cup, making them it the most ideal and eco-friendly choice for all occasions.