THERMOS Stainless King Vacuum Insulated Bottle 40 Oz
- Cap Type: Screw Cap
- Material Type: Stainless Steel
- Base Diameter: 4.3 inches
- Manufacturer Warranty Description: 5 years
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B08JX32JHPCategory: Thermoses
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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.
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
- 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.
Pros and cons
- 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 | |
| Base Diameter | 4.3 inches |
| Item Weight | 1 pound |
| 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 |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Water |
| Theme | Food |
| Additional Features | Dishwasher Safe |
| Item Type Name | Vacuum-Insulated Beverage Bottle |
| Pattern | THERMOS |
Closest rivals on specs
Simple Modern Summit Insulated Water Bottle with Straw 22 Oz- Base Diameter 4.3 vs 2.9 inches (+48%)
- Item Weight 1 vs 0.81 pounds (+23%)
Simple Modern Disney Princess Kids Water Bottle 14 Oz- Base Diameter 4.3 vs 2.9 inches (+48%)
- Item Weight 1 vs 0.58 pounds (+72%)
YETI Rambler Bottle with Chug Cap 36 Oz- Base Diameter 4.3 vs 3.8 inches (+13%)
- Item Weight 1 vs 0.31 pounds (+223%)
Frequently asked questions
Is the Thermos Stainless King 40oz dishwasher safe?
Yes, it is dishwasher safe with the top rack recommended.