★★★★★ 100+ Reviews

Memorial Day Exclusive

Get 20% OFF the convenient 2 drink Tumbler. Splitflask is the first insulated water bottle with two chambers and dual temperature technology, allowing it can maintain hot and cold drinks at the same time for hours.


1. Carrying Multiple Drinks is a HASSLE

If you're someone who juggles multiple drinks throughout the day, you're likely familiar with the HASSLE of carrying multiple water bottles. Managing two drink containers is not only cumbersome but also CLUTTERS your car or work space. Moreover, carrying them around along with a myriad of other items can be a real BURDEN.

gif image of hand reaching for a Splitflask and opening the lids.

2. Splitflask is the ONLY 2 Drink Tumbler in the World

Traditional water bottles are limited to carrying just one beverage at a time, either hot or cold, but not both. Splitflask REVOLUTIONIZES this with its innovative dual-chamber and dual-temperature technology, allowing you to EFFORTLESSLY carry your 2 favorite drinks in 1 convenient cup. With Splitflask, hot drinks stay hot and cold drinks stay cold for hours.

3. All Other Tumblers are ONE DRINK PONYS

Many tumblers on the market are designed for just one beverage, a reflection of OUTDATED hydration habits. The Splitflask, however, is the result of two years of meticulous research and design by a NICU nurse. With Splitflask, you experience genuine innovation that SIMPLIFIES and ENHANCES your hydration routine, enabling you to DRINK MORE and FEEL BETTER.

Why Our Customers LOVE Splitflask

Don't just take our word for it; our customers' enthusiastic feedback speaks volumes. The love for SPLITFLASK has been overwhelming. Once you experience the convenience of carrying two drinks, each at its ideal temperature, in one cup, you'll understand the magic of SPLITFLASK for yourself.

Dual Temperature

Double-wall vacuum chambers ensure your drinks maintain their ideal temperature, keeping them refreshingly hot and cold for hours.

Fits Most Car Cupholders

Splitflask is ingeniously designed to fit into most car cupholders, making it easier than ever to take your cup on the go.

Dishwasher Safe

Cleaning Splitflask is effortless—it's dishwasher safe, allowing you to enjoy your drinks without fretting over the cleanup.

How Do We Stack Up?

Conventional insulated bottles are limited to a single beverage, but Splitflask breaks the mold. See how we compare.

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

Tested Temperature Retention


In case you were wondering, Splitflask is BPA-Free.

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

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

Yes. The Cyberbackpack comes with a 4000mAh custom-matching USB-A charger.

Yes. Splitflask is BPA 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, a handle is not included.
However, we are developing a removable handle attachment accessory which will be bailable for purchase soon.

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

Orders typically ship within 24 hours. Once shipped, it will take on average 2-4 business days for domestic shipments and 5-12 business days for international shipments. Delivery details will be provided in your confirmation email.

We offer a 30-day no-hassle return. If after 30 days you are not happy with your purchase, we would be happy to take it off your hands. Please refer to our returns policy page for more details.

You can check out our detailed FAQs page or contact us through our contact page! We will be happy to assist you.