THERMOS Stainless King Vacuum-Insulated Beverage Bottle
- Thermose
- Stainless Steel
- Screw Cap
- 1
- Better rated than 59%
- More reviewed than 86%
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How it ranks among the 22 thermoses we track
4.7★ across 25,600 Amazon ratings, Bayesian-smoothed toward the category average.
25,600 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
1,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 22 thermoses we track - how the scorecard works · full thermoses data report. Confidence: high - strong rating volume and complete data.Updated 6 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This 40 ounce Thermos Stainless King bottle pairs double-wall vacuum insulation with a twist-and-pour stopper and a cup that doubles as its lid, built in 18/8 stainless steel.
Reviewers consistently report it holding coffee hot for 10 or more hours, with some describing heat retention past the brand's 24-hour claim overnight. The main complaint that surfaces is cosmetic: the painted exterior can chip or dent if the bottle is dropped on a hard floor, though at least one reviewer who worried about scratching found the finish held up better than expected. Several owners mention buying a second one after years of daily use on the first.
- 40 oz capacity, 18/8 stainless steel
- Reviewers confirm 10+ hour heat retention
- Twist-and-pour stopper, built-in cup lid
- Top-rack dishwasher safe
Who it's for
Suits someone carrying coffee or cold drinks for a full day, especially where sharing from the built-in cup matters. Less useful for someone who wants a lighter, single-serve bottle, since 40 ounces is meant for sharing or an all-day supply.
What buyers say
From Amazon customer reviews.
Multiple reviewers say coffee stays hot for 10 or more hours, with a few reporting it still steaming after a full night, well past the point a previous thermos brand had stopped working for them. The twist-and-pour stopper and built-in cup lid get repeated praise for not leaking even on its side. The one real complaint is cosmetic: the exterior can dent or chip if dropped on a hard floor, though one reviewer who expected the paint to scratch easily found it held up better than feared.
Strengths and trade-offs
Drawn from this product's published specifications.
- Exterior can dent or chip if dropped
- 40 oz size is heavy for single-serve carry
- Dishwasher safe on top rack only
Specifications
| Brand | Thermos |
|---|---|
| Dimensions & fit | |
| Item Weight | 1 pound |
| Base Diameter | 4.3 inches |
| Item Dimensions W x H | 1 × 1 inches |
| Capacity & performance | |
| Age Range Description | Adult |
| Construction & materials | |
| Material Type | Stainless Steel |
| Color | Midnight Blue |
| Included components | |
| Unit Count | 1 |
| Included Components | Beverage Bottle |
| Warranty & support | |
| Manufacturer Warranty Description | 5 years |
| Other details | |
| Cap Type | Screw Cap |
| Number of Items | 1 |
| Recommended Uses For Product | Water |
| Additional Features | Dishwasher Safe |
| Item Type Name | Vacuum-Insulated Beverage Bottle |
| Product Care Instructions | Hand Wash Only |
| Theme | Food |
| Pattern | THERMOS |
Other Thermos thermoses
How it compares
This product against the closest alternatives we track in thermoses.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| THERMOS Stainless King Vacuum-Insulated Beverage BottleThis product | 4.7 / 5 | 25,600 | 4.7 / 5 |
| Owala FreeSip Sway Stainless Steel Water Bottle 30 oz Black CherryOwala | 4.6 / 5 | 11,700 | 4.8 / 5 |
| CamelBak Chute Mag Vacuum Insulated Stainless Steel Water BottleCamelBak | 4.7 / 5 | 11,400 | 4.8 / 5 |
| Hydro Flask Water BottleHydro | 4.7 / 5 | 14,500 | 4.7 / 5 |
| STANLEY IceFlow Flip Straw 2.0 BottleStanley | 4.7 / 5 | 8,000 | 4.8 / 5 |
Similar thermoses from other brands
Questions about the Thermos thermoses
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How long does the Thermos Stainless King 40oz keep coffee hot?
The brand rates it for 24 hours, and reviewers commonly report it still hot after 10 or more hours, including overnight.
Does the Thermos Stainless King 40oz leak when it's on its side?
Reviewers report the twist-and-pour stopper seals well enough that it does not leak even when the bottle is laid on its side.
Is the Thermos Stainless King 40oz dishwasher safe?
Yes, it is dishwasher safe with the top rack recommended.