Thermos
18oz STAINLESS STEEL COLD DOME
Best insulated tumbler for commuters who enjoy chilled iced coffee daily.
Keep your chilled beverages perfectly cold on the go with the Thermos 18oz Stainless Steel Cold Dome. This tumbler utilizes Thermos™ vacuum insulation technology to maintain cold temperatures for up to 9 hours. It is constructed from durable stainless steel and features a sweat-proof, fingerprint-resistant exterior. The convenient design includes a clear dome lid and an easy-to-clean straw. For simple maintenance, both the straw and the cup are safe for the top rack of your dishwasher. This cup is ideal for smoothies, iced coffee, and cold juices, but is not intended for hot liquids.
$18.99
Owner Satisfaction
4.6
/ 5
Category Rank
306
/ 987
#306 in Thermoses
Price vs Category Average
-64%
Below average
Capacity
18.532
/ oz ( ml)
Who it's for
- Commuters needing ice-cold drinks throughout a long workday
- Outdoor adventurers requiring gear that survives rugged daily use
- Desk workers wanting to protect documents from condensation rings
Who should skip it
- Busy individuals preferring low-maintenance, easy-to-clean drinkware
- Commuters relying on standard car cup holders for travel
- Budget-conscious shoppers looking for affordable everyday hydration options
Performance breakdown
Cold Retention
Vacuum insulation keeps beverages chilled for nine hours of consistent performance.
Build Durability
Stainless steel construction withstands daily drops and rough handling with ease.
Maintenance Ease
Top-rack dishwasher compatibility makes cleaning the straw and cup effortless.
Exterior Finish
Sweat-proof and fingerprint-resistant coating keeps the exterior looking pristine.
Portability
Slim profile fits most cup holders for convenient travel on the go.
Versatility
Strictly limited to cold liquids, restricting its use for hot beverages.
Key Specs
Capacity
18oz. (532 ml)
Material
Stainless Steel
Height
9.6 inches
Weight
0.72 lb.
Insulation Type
Vacuum Insulated
Dishwasher Safe
Yes (Top Rack Recommended)
Dimensions
3.0 in. Width, 3.0 in. Depth
Origin
China
Features
- Thermos™ vacuum insulation for cold retention
- Durable stainless steel construction
- Sweat-proof and fingerprint-resistant exterior
- Clear dome lid with removable straw
- Dishwasher safe for easy cleaning
- Keeps drinks cold for up to 9 hours
- Designed for cold beverages only
What customers say
Customers overwhelmingly praise the Thermos Cold Dome for its superior insulation, frequently noting ice remains solid for over twelve hours. This exceptional cold retention makes it perfect for long days. The durable stainless steel construction is highly valued, suggesting a robust, long-lasting build that handles daily use well. Users also appreciate the secure, leakproof lid design, which offers confidence when transporting beverages. Its versatility across drinks like iced coffee and water further enhances its appeal. While minor cleaning considerations exist, the product's core performance and perceived value are excellent. It is celebrated as a reliable, high-performing container that consistently exceeds expectations for keeping drinks cold.
Know before you buy
No, the Cold Dome is specifically engineered for cold beverages only. Using it with hot liquids may cause pressure buildup or damage the lid seal.
Not at all. The tumbler features a sweat-proof exterior, so it stays dry on the outside regardless of how cold your drink is or how humid the environment.
Yes, the straw is removable and both the straw and the cup are top-rack dishwasher safe. For a deeper clean, you can easily disassemble the components.
With a width of 3 inches, this tumbler is designed to fit most standard vehicle cup holders comfortably.
Thanks to Thermos™ vacuum insulation technology, this tumbler will keep your chilled beverages cold for up to 9 hours.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$19