Help center

Product, shipping, care, and returns—answered clearly in one place.

Frequently asked questions

Can Splitflask carry hot and cold drinks at the same time?

Yes. Each chamber is independently vacuum-insulated to reduce temperature transfer while keeping the drinks completely separate.

How long does it keep drinks hot or cold?

Splitflask is designed to keep two hot drinks warm for up to 2 hours or two cold drinks chilled for up to 4 hours. When carrying one hot and one cold drink, expect approximately 1–2 hours of temperature retention on each side.

Can either chamber hold a hot or cold drink?

Yes. Both chambers can hold hot or cold beverages. Use two hot drinks, two cold drinks, or one of each.

Is the lid leakproof?

The lid is designed to be leakproof when both closures are fully shut and the center seal is aligned with the chamber divider. Wipe away any liquid around the lid before placing it in a bag.

Will the two beverages mix?

No. The center seal aligns with the divider to keep each beverage in its own chamber.

How much does Splitflask hold?

The 30 oz Splitflask has two 15 oz chambers.

Is Splitflask dishwasher safe?

Yes. The tumbler and lid are top-rack dishwasher safe. Hand-washing can help preserve the finish over time.

Is Splitflask BPA- and BPS-free?

Yes. Components that contact your drink are BPA- and BPS-free.

Does Splitflask fit in a car cupholder?

The 30 oz Splitflask is designed to fit most standard car cupholders.

Does Splitflask have a handle?

The 30 oz Splitflask has a streamlined, handle-free design. Check the product listing for currently available handle accessories and larger models.

How should I clean Splitflask?

Separate the lid and removable parts, then place them on the top rack of the dishwasher or wash them with warm, soapy water and a soft brush. Rinse thoroughly and let every component dry before reassembly.

Why is temperature retention shorter when I carry one hot and one cold drink?

Make sure the center silicone seal on the underside of the lid is aligned with the stainless steel divider. A complete seal reduces temperature transfer between chambers.

What should I check if the lid is leaking?

Fully close the straw and spout, dry any residual liquid around the lid, and align the center silicone seal with the chamber divider. If the issue continues, email hello@splitflask.com.

How can I get replacement straws, lids, or parts?

Check the store for available accessories. If a component arrived damaged or you cannot find the part you need, email hello@splitflask.com.

How much does shipping cost?

US orders over $60 qualify for free standard shipping. Available rates for smaller US orders and international destinations are shown at checkout.

How do I track my order?

We will email tracking details after your order ships. Tracking may take up to 48 hours to update. If it still has not updated after that, email hello@splitflask.com.

Can I change an order after placing it?

Email hello@splitflask.com as soon as possible. We will help if the order has not entered fulfillment, but changes are not guaranteed.

What is the return window?

Eligible purchases can be returned within 30 days. Review the refund policy for eligibility, exclusions, and instructions.

How do I start a return?

Email hello@splitflask.com with your order number. Our support team will confirm eligibility and send the next steps. Review the refund policy for full terms.