Is Thermos Funtainer dishwasher safe?
Not dishwasher safe
The Thermos Funtainer is not dishwasher safe.
Quick facts
| Dishwasher safe? | No — Not dishwasher safe |
|---|---|
| Category | Drinkware |
| Source | Researched — confirmation in progress |
| Last checked | 2026-06-17 |
Why
The Funtainer is made of stainless steel with a vacuum insulation and a plastic lid. Dishwasher heat and moisture can damage the vacuum seal, degrade the plastic lid, and cause rust or corrosion over time.
How do you wash Thermos Funtainer?
Hand wash with warm soapy water and a soft sponge. Rinse thoroughly and air dry with the lid off to prevent moisture buildup.
More drinkware
Last updated 2026-06-17. General guidance — always check your product’s care label. How we verify.