
Vacuum Insulated Portable Tumbler Smoke Black
420ml vacuum-insulated commuter tumbler in Smoke Black with a folding carry handle.
- From JapanJP-Direct
- AuthenticVerified
- 10–14 daysDelivery
Keeps drinks hot above 68°C or cold below 10°C for 6 hours in a compact 420ml tumbler with a fold-away carry handle.
About this product
THERMOS's Vacuum Insulated Portable Tumbler JOV-421 is a 420ml commuter mug with a fold-flat carry handle, built for the daily trip between home, office, and car. The double-wall vacuum body keeps coffee hot or iced drinks cold for hours, and the wide 55mm mouth makes it easy to add ice or clean out after use.
How to use
- Rinse with hot or cold water for about a minute before first use to pre-condition the insulation.
- Fill below the max line, close the lid firmly, and fold the carry handle flat when stored in a bag.
- Wash all parts by hand or in the dishwasher; do not microwave the stainless steel body.
Ingredients
- Stainless steel (18-8), inner bottle — double-wall vacuum insulation for heat/cold retention.
- Stainless steel body, acrylic resin coating — scratch- and impact-resistant exterior in Smoke Black.
- Polypropylene, handle & lid (foam PP core) — insulated grip with folding carry handle.
- Silicone rubber gasket — leak-resistant seal.
- Dishwasher safe (all parts) — not microwave safe.
FAQ
Is this tumbler dishwasher safe?
Yes, all parts are dishwasher safe.
Can I microwave it?
No — the vacuum-insulated stainless steel body is not microwave safe.
What is the fill capacity?
420ml (14.2 fl oz).
🇺🇸 For US customers
The quiet-luxury desk-setup crowd on TikTok keeps circling back to THERMOS for a reason — this 420ml tumbler holds a matcha or cold brew ice-cold through a whole workday, and the smoke black colorway is the one people keep re-upping in restock videos.