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Splitflask dual drink replacement lid
Splitflask dual drink replacement lid
Splitflask dual drink replacement lid


Precio de venta$15.00 USD Precio normal$29.99 USD
Ahorra 50%
Color:Hartley Black

In stock and ready to ship.


Fits Cupholders

Non-Slip Bottom

4hrs Hot | 12hrs Cold

No Spill / No Mix

SPLITFLASK Insulated water bottle


Discover the convenience of the SLITFLASK STRAW & SPOUT LID. Never worry about spills again with the unique design and secure lid. Stay hydrated on-the-go with ease and style.


  1. Dual-Chamber Design: Equipped with two separate 15 oz compartments, allowing for the storage and enjoyment of two distinct beverages.
  2. Temperature Control: Independently insulated compartments maintain the desired temperature of each beverage—hot or cold—ensuring optimal refreshment.
  3. Flavor Integrity: Prevents mixing of flavors, preserving the unique taste of each beverage throughout consumption.
  4. Elegant Aesthetic: A sleek and stylish design that combines functionality with aesthetic appeal, creating a sophisticated beverage companion.
  5. Durable Build: Crafted from high-quality 18/8 stainless steel, ensuring longevity, resistance to corrosion, and a safe container for your drinks.
  6. Convenient Size: Compact dimensions and a 30 oz overall volume offer ample capacity while remaining easy to carry and store.
  7. Easy to Clean: Stainless steel construction allows for easy cleaning, maintaining hygiene and the integrity of your beverages.
  8. Saves Space and Hassle: Forget about the hassle of carrying multiple bottles. Splitflask's versatile design reduces clutter, saves space, and simplifies your on-the-go hydration routine.
  9. Leak-Proof: Carefully engineered seals and closures ensure a leak-proof experience, protecting your belongings from spills.
  10. Versatile Use: Perfect for a wide range of beverages, from water and coffee to smoothies and more, making it suitable for various occasions and activities.


How big is a 30oz tumbler?

  • Volume: 30 oz (900 ml)
  • Dual-Chamber Volume: Each chamber holds 15 oz (450 ml)
  • Dimensions: 200mm (Length), 105mm (Top Width/Diameter), 80mm (Bottom Width/Diameter)
  • Weight: 1.1lbs
  • Material: High-quality food-grade 18/8 stainless steel

Does your 30 oz tumbler fit in a cup holder?

Yes. Our 30 oz dual-chamber 2-in-1 tumbler with Dual-Sip Lid are designed to fit in a standard cupholder. Cupholder dimension is a minimum of 3.5 inches in diameter. The Splitflask 30 oz tumbler base is 3.1 inches in diameter.

Package Includes:

  • 1 Splitflask 30 oz with Dual Chambers
  • Care and Maintenance Instructions

Note: All specifications are subject to minor variations due to the manufacturing process.

How To Use

Dual Chambers: Splitflask has two separate sections.

Temperature Control: Both chambers are vacuum insulated. This helps keep drinks at their desired temperature for hours.


  1. Hot & Cold: Put a hot drink (like coffee) in one chamber and a cold drink (like iced water) in the other.
  2. Hot & Hot: Place two hot drinks in both chambers to keep them warm longer.
  3. Cold & Cold: Store two cold drinks in each chamber to keep them cool for an extended time.


Saves 167 plastic water bottles each year

Saves 167 plastic water bottles & 150 plastic coffee cups each year

Sip Independently From Each Side

Our unique Dual-Sip™ lid lets you sip from each side whenever you desire, granting you the freedom to enjoy both beverages at your own pace.

Hot Stay Hot, Cold Stays Cold

Whether it's piping hot coffee on one side or ice-cold lemonade on the other, each side preserves your preferred temperature without any mixing or spilling.

No Spills, No Leaks, No Problem

Enjoy worry-free hydration with the Splitflask, designed for a spill-free and leak-proof experience, ideal for active lifestyles or busy commutes.

Splitflask hot and cold tumbler with silicone base and powder coated shell

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Your Satisfaction Is Guaranteed.

We love Splitflask™ and are confident you will too! That’s why we're offering a 30-Day, Risk-Free Trial. If you're not obsessed with it, we'll give you a refund.


We offers a stress-free, 30-day return policy.We made it super easy to return your products. Head over to our 'Contact Us' page.

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.

Each side can hold up to 15 ounces of liquid for a combined total of 30 ounces.

Yes. Each side is independently vacuum-insulated to prevent temperature loss or gain from either side. So hot stays hot and cold stays cold.

Yes. Splitflask is dishwasher safe.

Yes. Splitflask is BPA and BPS-free.

Yes. Splitflask will fit in your car’s cup holder.

Splitflask is designed with two 15oz chambers for a total of 30oz.

No. In order to preserve the minimal design aesthetic, Splitflask does not come with a handle. However, we have developed a removable handle attachment accessory which will be available for purchase soon. For now, we do offer a Bottle Sling that you can purchase in our store.

You can purchase replacement straws, lids, and other accessories from our store.

Yes. Unlike many other cups in the market, we knew a water bottle that spilled was a dealbreaker for our discerning customers. So we designed a no-spill and no-mix Dual-Sip™ lid.

No. Our Dual-Sip™ lid is spill-proof and mix-proof, ensuring that both beverages stay out until you are ready to enjoy them independently.

You can contact us through our contact page or email us at hello@splitflask.com or visit our Contact Us! We will be happy to assist you.

Yes. Our 30 oz dual-chamber 2-in-1 tumbler with Dual-Sip Lid are designed to fit in a standard cupholderCupholder dimension is a minimum of 3.5 inches in diameter. The Splitflask 30 oz tumbler base is 3.1 inches in diameter.

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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.