Help Center

US Shipping

We offer a variety of shipping methods on our site. Free shipping to the continental US is available on orders of $39 or more. Expedited shipping is available via USPS.

Orders to Alaska, Hawaii and US Territories are shipped via USPS Priority Mail.  

For all orders, your tracking number will be sent via e-mail when your package is shipped. 

Please ensure you select an address where deliveries are secure as we are not responsible for stolen packages.

International Shipping

We offer shipping to Canada via USPS and UPS. Note that we do not include duties and taxes in shipping to Canada. You may be charged for duties and taxes separately. 

Tracking your Order

You can check the status of your order by logging into your account, clicking My Orders, and then clicking on the order you would like to track.

Cancelling your Order

We ship orders very quickly. Cancellation of orders must be made before your order has shipped.  

To cancel your order, click on the View My Order Link on your order confirmation email and click cancel. Note: If your order has shipped, we cannot cancel it.

SHIPPING METHODS AND TIMES

Shipping times may vary depending on the method requested at the time of purchase.  United States and Canadian shipping addresses only.

Standard Shipping: Your package will typically arrive typically between 3-7 business days within the contiguous United States. 

USPS Priority Mail: USPS Priority Mail packages typically arrive within 2-3 days after shipment. USPS delivers on Saturday, but does not deliver on Sunday. 

Expedited Shipping: Delivery within 2 business days to most areas; applicable for Continental US, Hawaii and Alaska only. Two  Day service delivery days are Monday through Friday.  No Holidays. Please note that Expedited orders placed after 12 PM EST or on a weekend will be processed the following business day. Select zip codes are not available for this service and some locations require additional shipping times.

Canada Orders: Depending on the method selected, orders to Canada typically arrive in 5 to 10 business days. Orders placed by 12pm EST on business days will ship the same day. Orders placed after 12pm EST on business days will ship the next business day.

RETURNS PROCESS

Unused products can be returned within 30 days of your purchase date for a full refund less return shipping fees. To initiate a return of an unused item, please contact Customer Service via the Contact Us Form on our home page. Please have your order information available. NOTE: We do not offer exchanges. 

CANCELLATION PROCESS

We ship orders very quickly. Cancellation of orders must be made before your order has shipped.  

For your information, orders received before 12pm Eastern Time on weekdays typically ship the same day. Orders received after 12pm Eastern Time or on weekends typically ship the next business day. 

To cancel your order, click on the View My Order Link on your order confirmation email and click cancel. Note: If your order has shipped, we cannot cancel it.

• Double-check the address on your paid order.

• Check your mailbox or wherever else you receive mail or packages.

• Look for a notice of attempted delivery.

• Look around the delivery location for your package.

• See if someone else, such as a neighbor or family member, accepted the delivery

• Wait 48 hours: Wait 48 hours- the package may have been marked delivered in error and is still on the way!

• If you haven't received your package, contact us within 30 days of expected delivery and we'll do everything we can to help.

• Our policy is to replace items lost in transit, which are verified missing through a claim with the shipping provider. 

• Refunds will not be given and we may involve the authorities when fraud/ theft is suspected.

Our bottles keep liquids cold for up to 24 hours and hot for up to 12. 

To keep liquids cold for as long as possible, use cold liquids and larger ice cubes in your bottle.

Heat will depend on the starting temperature of the liquid when poured into the ThermoFlask.

We recommend against using straws with hot beverages. 

We are continuously testing and improving our products. After extensive testing, we have proved that our bottles are now in fact able to be cleaned in the dishwasher. While we recommend a daily hand wash to maintain the cleanest conditions, note that you can place your bottle in the dishwasher. We recommend that all lids be placed in the top rack. Note that this does not apply to any bottles with a metallic colored coating. 

Cleaning instruction video.

We recommend cleaning your bottle and lid once per day to ensure that it remains mold and germ-free.

The cleanliness of your bottle or pitcher is not covered under the warranty.

Before cleaning your bottle, please reference the bottom of your bottle.  

For bottles marked as “Handwash only” we recommend you hand wash your bottle with a non-abrasive dish soap and warm water. Do not use cleansers with harsh chemicals like bleach or chlorine as they can ruin your bottle.  

For bottles marked as “Dishwasher Safe” please remove lids before placing in the dishwasher. Please note that harsh detergents, high water temperature and high mineral content in your water may affect the appearance of your bottle over time including water spots and/or fading.

Watch this informative cleaning video for spout bottles.

Watch this informative cleaning video for straw bottles.

Watch this informative cleaning video for o-rings.

Watch a cleaning video for the insulated coffee mug. 

We recommend cleaning your bottle and lid once per day to ensure that it remains mold and germ-free.

The cleanliness of your bottle or pitcher is not covered under the warranty.

All ThermoFlask lids are top shelf dishwasher safe.  

If you prefer handwashing, we recommend that you wash your lid (including the mouthpiece) daily with warm soapy water and a straw brush.  Unscrew the spout or extend the straw before rinsing or washing. Do not disassemble the folding straw from the lid to clean.  

For a deep cleaning, we suggest removing the silicone o-rings in your bottle lid to clean, and then soaking the lid O-rings with a 50/50 solution of water and vinegar. 

After cleaning, make sure that all parts are completely dry before reassembling.

Watch the ThermoFlask cleaning video.

Watch the ThermoFlask O-Ring cleaning video. 

• • O-Rings are clear silicone rings that are located inside the lids where it meets the bottle or pitcher. They are required for the leakproof seal. If they are missing or damaged, you can find them on the website here: https://mythermoflask.com/collections/o-rings

O-Ring Compatibility Chart

18 and 24oz ThermoFlask bottles fit in most cup holders. 

32oz and larger ThermoFlask bottles will not.

Yes, you can put carbonated beverages in your double-wall stainless steel bottles. However, we urge you to use carefully as carbonated beverages in an airtight container may cause a build-up of pressure which could cause your bottle to leak or the liquid to splash out unexpectedly when you open your bottle. Use with caution.

Where you can enjoy warm liquids, we recommend against using straws with hot beverages. It is not recommended to overfill any of the bottles with hot liquids as they may spill over and cause harm. Use caution at all times when handling hot liquids. 

Do not use in microwave or freezer. 

Do not use on stove for cooking.

Do not overfill product. Hot liquids can scald you. Keep out of reach of children when filled with hot liquids.

Allow hot liquids to cool to a drinkable temperature prior to sealing lid. 

Always use caution when using with hot liquids. Never use with liquids hot enough to scald as hot liquids and steam can cause burns. Hot liquids may cause pressure to build up within the bottle causing the bottle to leak or spray when opening, especially in high altitudes, like in an airplane, or when hot contents have been shaken. Allow hot liquids to rest before opening.

Please refer to this page for your warranty questions.

We do not recommend storing milk or dairy products in our bottles for an extended amount of time, although our stainless-steel bottles are insulated, the temperature is not controlled, and bacteria growth can begin when it reaches a specific temperature.  Once the contents begin to ferment this can also cause pressure to build up over time. Please use caution, follow food safety guidelines, and wash your bottle after each use.  

Yes but we recommend hand washing only to keep the overall bristle shape.

While it does make a tight seal that is completely leakproof, it does not vacuum shut. 

Because we use high-grade stainless steel, our food jars are not safe for microwaves.

Food jars are not intended for the freezer or refrigerators.

Dry ice and carbonated beverages are not safe for use with food jars.

Not at the current time.

This depends on the size and shape of the lunchbox. While it’s a little big for most lunch boxes, the convenient handle makes it easy to carry on its own.

We recommend cleaning your food jar and lid after each day of use to ensure it remains mold and germ free.  The food jar is dishwasher safe. For a deep cleaning, remove the lid's O-Rings and soak in a 50/50 solution of water and vinegar until you can wipe clean and then rinse with fresh water. (Do not use cleansers with harsh chemicals like bleach or chlorine as they can ruin your bottle.) When reassembling, ensure the jar, lid and O-ring are thoroughly dry. Check your lid to make sure the O-ring is in place. The O-Rings will create the airtight seal to prevent leaks and ensure proper insulation. 

Some simple ways to extend the temperature are filling the food jar with hot water before use. Use caution with the hot water and do not seal with the lid.  Pre-chill the food jar by filling it with cold water and ice for 5-10 minutes before using.

Food jars are not intended to store food for longer than 24 hours. Some contents may spoil faster (examples: homemade soup, dairy, tomato, partially-consumed food, or when product is frequently opened/closed). Spoilage may increase pressure and cause forceful ejection of the stopper, lid, or contents, resulting in injury or property damage.

Our best-selling stainless water bottles and drinkware are available to be customized with a premium laser engraving, however certain products may be excluded due to product availability. Any product that is customizable will have our customize button available on the product page. Orders up to 100 bottles may be facilitated through the website.  

For orders over 100 bottles or for business or corporate use, please contact us here. 

Laser engraving can be done on any color stainless steel bottle available on the website. You can add designs or text to the front, back, or both sides of the bottle. The decoration must fit into the predetermined space for each bottle or drinkware. Cost is $8 per side. 

An automated laser removes powder coating to expose the stainless steel according to the design mockup online. Our partners created a superior laser to decorate to the finest detail and you will certainly notice the difference when receiving. 

PNG,JPEG, SVG, and BMP

Requirements 

Files and decoration options must comply with the ThermoFlask policies noted before you check out.

Expect 3-8 business days prior to shipping. Peak times may add to this expectation. We prioritize on a first come, first serve basis. If there are other items in your order, they will be held and shipped with your customized product(s) when ready in accordance with the tier of shipping chosen at checkout. 

Your order will be cancelled, and you will be refunded. Orders that are cancelled will be refunded within 5-7 days. 

No, once the product is engraved, the product is ineligible for returns. If you believe there is a manufacturer defect, please contact customer service.  

$8 per side on any available stainless product.  

For orders over 100 bottles, please contact us. 

Due to the nature of a customized product and demand, expect 2-4 business days for engraving and then your order will ship according to the tier chosen at checkout. Peak times or demand may add to the timeline. 

Yes, customizing the bottles does not change how they should be cared for.  

ThermoFlask reserves the right to cancel any submission that may be considered any of the following. Designs or text that are obscene, defamatory, libelous, advocating persecution based on gender, race, age, religion, national origin or otherwise. We ask that you are respectful and stay within appropriate boundaries. 

Licensed and copyright images and language 

ThermoFlask respects the intellectual property rights of others, and we ask that you do the same. All images and text are reviewed, and if your submission infringes any copyrights or trademarks, your order will be cancelled and refunded. It is your responsibility to check your design for typos or errors before submitting and checking out as changes cannot be made once submitted.  

We offer a superior laser marking process and therefore accept images in 

PNG,JPEG, SVG, and BMP formats. 

All ThermoFlask bottles are made of food-grade 18/8 stainless steel and feature a durable powder-coated finish. The lids are made of BPA-Free plastic (PP#5) and feature silicone o-rings to create a leak-proof seal.

All ThermoFlask bottles are designed in California and manufactured in China.

ThermoFlask’s Tritan Collection™ gives users a lightweight, durable option while hydrating on the go. Crafted from Eastman Tritan™, ThermoFlask’s Tritan line is BPA-Free, stain/odor and shatter resistant. The clear bottles have a wide mouth for easy filling, and you can clearly see the liquid level. The bottle and lid are top rack dishwasher safe. Not for use in microwave or freezer.

Please fill out this form.

Yes, with a minimum of 48 bottles. Please fill out this form and you will receive a response in 1-2 business days.

Our Thermoflask Two Lid Bottles are available for engraving. Other stainless steel bottles will be available for engraving soon. We do not offer printing on bottles or decoration of Tritan bottles.

We provide you with a pre-production digital proof for approval.

We offer free shipping to one location within the contiguous USA. Freight to Canada will be charged at the current rate.

Tax exempt documentation must be provided prior to placing the order. Tax exempt status rules by state so requests will be reviewed prior to removing tax.

Credit card payments or wire transfers (if set up previously).

Once the digital proof is signed off on and payment is made, no further adjustments may be made to the order, including returning.

Order total must be over $50 1. Add items to your cart.2. Check out with Shop Pay.3. Choose to pay in 4 installmentsYour first payment will either be due at checkout or two weeks after your purchase.The next three installments will be automatically charged to your card saved on Shop Pay every two weeks.You'll receive an email reminder before each payment as a reminder. 

When using Shop Pay installments, checking eligibility has no impact to credit. Late payments and non-payments may affect your ability to pay with Shop Pay installments in the future.

When checking out with Shop Pay, you now have the option to pay now or later.Paying in installments on Shop Pay allows you to split your purchase amount into four equal, bi-weekly installment payments—with rates from 0%-36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affime.com/lenders. Options depend on your purchase amount, and down payment may be required. State notices to consumers https://www.affirm.com/licenses

*Payment options are offered by Affirm and are subject to eligibility check and may not be available in all states. California residents: Affirm Loan Services, LLC is licensed by the Department of Business Oversight. Loans are made or arranged pursuant to California Financing Law license 60DBO-111681.