Carry 2 beverages in one insulated tumbler (hot & cold) without spilling or mixing.


Carry your hot coffee & cold water together in one stainless steel vacuum insulated water bottle.

Coffee & Water Protein Shake & Energy Drink Vodka & Chaser Ice Coffee & Hot Coffee Pre-Workout & Post-Workout




I’ve been using the Splitflask for a few weeks now, and this is my second purchase. It has exceeded my expectations in every way.


Inspired By A NICU Nurse & Mom Of 3

Facing workplace restrictions on multiple drink containers, Cheryl envisioned a practical solution: a 2 drink tumbler that holds both hot and cold drinks simultaneously. After 2 years of R&D, Splitflask was born with the aim of simplifying the hydration routine for everyday heroes like Cheryl.

Splitflask is perfect for moms, nurses, teachers and everyone in-between❤️


The days of juggling your travel coffee mug and water bottle are so over.

Bringing your water bottle and your coffee travel mug with you is a huge hassle.

Splitflask offers a convenient solution.

How Do We Stack Up?

Conventional insulated water bottles and tumblers are limited to a single beverage. Splitflask breaks the mold.

  • Others
  • Carries 2 beverages
  • Keeps 2 temperatures
  • Preserves each flavor
  • Reduces clutter & takes less space
  • Saves you money (2 cups for the price of 1)
  • Prevents 2x more plastic from the environment

Why You Need A 2-Drink Tumbler

Most people start their day with a cup of hot coffee to wake up and a bottle of cold water to stay hydrated. Imagine having both beverages in one sleek, convenient bottle that keeps them at the perfect temperature.

Meet your new hydration hero that:

  • Keep your hot coffee and cold water in one bottle without mixing flavors or temperatures.
  • Reduces the need for multiple single-use plastic bottles.
  • Is equipped with double-wall vacuum insulation, ensuring your drinks stay at their ideal temperature for hours.
  • Designed to fit in most car cupholders and eliminates the hassle of carrying multiple bottles.
  • Is dishwasher safe, making cleanup a breeze.
Standard single chamber tumbler
Splitflask dual chamber tumbler

Engineered For The Future

Our products are crafted with sustainability at the forefront, designed for repeated use. Featuring BPA-free lids, along with stainless steel and dishwasher-safe finishes, we significantly reduce plastic waste and conserve water.

Two hands washing under water

Every Order Makes An Impact

A part of your purchase helps fund our well-building projects in Africa, providing essential clean water to communities in need. Your choice to shop with us brings hope and health to many.

Frequently Asked Questions (FAQs)

We try to answer your frequently asked questions about the Splitflask stainless-steel insulated water bottle.

Absolutely! Splitflask's innovative double-walled vacuum insulation creates separate thermal environments for each chamber, ensuring your iced tea stays refreshingly chilly while your hot cocoa remains comfortably warm for hours.

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

Each side of the Splitflask water bottle 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 you can carry:

  1. A hot beverage in both chambers,
  2. A cold beverage in both chambers,
  3. A hot beverage in one chamber and a cold beverage in the other chamber.

Hot stays hot and cold stays cold.

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.

Splitflask stainless steel water bottles is dishwasher safe. However, hand-washing is recommended to ensure a longer lifespan and optimal performance of any stainless steel water bottle. If using dishwasher, be sure to place it in the top rack of your dishwasher and not the bottom.

Yes. Splitflask is BPA and BPS-free.

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

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

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.

You bet! The Splitflaks insulated tumbler leakproof lids prevent any embarrassing beverage mishaps in your bag, backpack or car. We designed a no-spill, no-mix, no-stress tumbler lid.

While hand-washing is always recommended, most Splitflask insulated water bottles are dishwasher-safe. Simply remove the lids and any detachable components before placing them in the top rack of our dishwasher. If hand-washing, simply soak in warm soapy water and sue a soft bristle sponge to scrub and rinse thoroughly afterwards.

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.

Make sure the middle strip of silicone at the bottom of your lid is perfectly lined up with the middle stainless steel divider in the cup. This will create a perfect seal between each chamber and prevent temperature transfer, allowing the temperature in each chamber to last longer.

This is typically due to some residual liquid on the exterior of your lid, trapped in the nooks and crannies of the straw and spout flaps. Make sure the exterior of your lid is wiped and dry.

Also make sure you have a perfect seal by aligning l the middle strip of silicone at the bottom of your lid perfectly with the middle stainless steel divider in the cup. This will also prevent temperature transfer between chambers, allowing the temperature in each chamber to last longer.