---
product_id: 48120276
title: "Large Stainless King Midnight Blue Drinks Flask"
brand: "thermos"
price: "$79.92"
currency: USD
in_stock: true
reviews_count: 13
category: "Thermos"
url: https://www.desertcart.us/products/48120276-large-stainless-king-midnight-blue-drinks-flask
store_origin: US
region: United States of America
---

# 24h Hot Retention 24h Cold Retention Durable Stainless Steel Large Stainless King Midnight Blue Drinks Flask

**Brand:** thermos
**Price:** $79.92
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay hot, stay cool, stay unstoppable with Thermos King!

## Quick Answers

- **What is this?** Large Stainless King Midnight Blue Drinks Flask by thermos
- **How much does it cost?** $79.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48120276-large-stainless-king-midnight-blue-drinks-flask)

## Best For

- thermos enthusiasts

## Why This Product

- Trusted thermos brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Brave the Day:** Rugged stainless steel construction that laughs off drops, dings, and daily hustle.
- • **Sip in Comfort, Anywhere:** No condensation, no burns—just a sleek, dry grip for your on-the-go lifestyle.
- • **Unmatched Temperature Lock:** Keeps drinks hot or cold for a full 24 hours—your beverage’s all-day bodyguard.
- • **Ready-to-Share Built-in Cup:** Integrated insulated cup for stylish solo sips or spontaneous toasts wherever you roam.
- • **Effortless Pouring Precision:** Twist-and-pour stopper lets you serve without lid removal—spill-free and fuss-free.

## Overview

The Thermos Stainless King Midnight Blue Flask (1.2L) delivers industry-leading vacuum insulation that keeps beverages hot or cold for 24 hours. Crafted from durable stainless steel, it’s designed to withstand daily wear and tear while offering a leakproof, twist-and-pour stopper and a built-in insulated serving cup. Perfect for professionals and adventurers alike, this flask combines rugged reliability with sleek style and practical convenience.

## Description

From the manufacturer

Review: Excellent heat retention and very practical for baby formula on the go - I bought this Thermos Stainless King travel flask mainly for preparing formula for my baby while out, after seeing posts online mentioning that it can keep water above 70°C for long periods throughout the day. The quality feels excellent and the stainless steel design feels very durable and well made. The matte black finish also gives it a sleek look while providing a nice grip in the hand. The heat retention is definitely the standout feature. It keeps the water hot for hours, which makes it extremely convenient when travelling or spending long periods out of the house with a baby. Knowing the water stays at a suitable temperature for formula preparation gives extra peace of mind. It seals very securely and has been completely leak proof for me so far, which is especially important when carrying it in changing bags or while travelling. It’s also easy to pour and drink from, and the overall size makes it portable enough for everyday use without feeling bulky. Another plus is that it’s straightforward to clean, I have purchased the OXO bottle cleaning brush for it, which makes cleaning much more convenient. Overall, a very practical and reliable flask that feels worth the investment.
Review: Built Like It Could Survive a Camping Documentary - I bought this Thermos Stainless King mainly for long work days and trips where I wanted properly hot tea without paying service station prices for disappointing coffee. After using it regularly, I can honestly say this thing takes temperature retention very seriously. The first thing that impressed me was just how long it keeps drinks hot. I made tea early in the morning, forgot about it for hours, and it was still properly hot later in the day, not “technically warm if we lower expectations,” but genuinely hot enough to enjoy properly. Cold drinks hold up equally well too. Filled it with iced water during warmer weather and still had ice hanging around much later than expected. The insulation on this flask is great! Build quality feels excellent as well. It has that reassuring “solid chunk of stainless steel” feel that makes you think it could survive being dropped down a hill and still come back asking for more tea. Definitely feels durable enough for everyday use, commuting, travel, or outdoor trips. The twist pour stopper is also far more convenient than I expected. Being able to pour without fully removing the lid is one of those small features that becomes genuinely useful once you start using it regularly. Less heat escapes, less chance of spills, and less fumbling around when half awake in the morning. The built in cup is decent too. Simple, sturdy, and does the job well enough for tea or coffee breaks on the go. It’s also surprisingly comfortable to hold considering it’s attached to what is essentially a giant insulated steel cylinder. Capacity wise, 1.2L is excellent if you drink a lot throughout the day. It’s enough for multiple large cups without constantly refilling. The trade off is that it’s definitely not a tiny lightweight flask. When full, this thing has some heft to it. Not ridiculous, but you’ll notice it in a backpack. Leak proof performance has been great so far as well. I’ve carried it horizontally in bags without any unpleasant surprises, which already puts it ahead of several “premium” travel mugs I’ve owned. The red finish also looks really nice in person. Bright enough to stand out without looking cheap or overly flashy. Overall, this is an excellent flask if you want serious heat retention, durability, and large capacity. Reliable, practical, and built to last. The kind of product you buy once and end up using for years mainly because it stubbornly refuses to stop working properly.

## Features

- Thermos Vacuum Insulation: Unrivaled temperature retention for hours in our stainless steel water bottle. Your coffee stays piping hot and your iced tea refreshingly cold
- Hard-as-Nails Construction: Crafted with durable stainless steel inside and out, this metal water bottle withstands drops, dings, and daily wear while keeping your drinks & food optimum
- Comfort in Every Sip: Stay cool and dry with this innovative thermos travel mug for hot drinks. No more burned hands or condensation rings - just pure drinking pleasure, hot or cold
- Built-in Serving Cup: Enjoy your favorite beverages anywhere with the insulated stainless steel cup. Share a toast or savour solo - convenience meets style in this coffee cup travel mug
- Pour with Precision: The clever twist-and-pour stopper lets you serve without removing the lid. No spills, no fuss - just smooth pouring action for your coffee mug travel companion

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001ET6P9G |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Base Diameter | 10.5 Centimetres |
| Best Sellers Rank | 494 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 10 in Insulated Bottles |
| Brand | Thermos |
| Brand Name | Thermos |
| Cap Type | Screw Cap |
| Capacity | 1.2 litres |
| Colour | Blue |
| Country Of Origin | China |
| Customer Reviews | 4.7 out of 5 stars 24,582 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| Global Trade Identification Number | 05010576832672 |
| Included Components | Handle, Insulated Stainless Steel Serving Cup, Stainless Steel Bottle, Twist & Pour Stopper |
| Is Oven Safe | No |
| Is the item dishwasher safe? | No |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 10.5W x 31H centimetres |
| Item Type Name | Flask |
| Item Weight | 1.46 Pounds |
| Manufacturer | Thermos |
| Manufacturer Warranty Description | No manufacturer. |
| Material Type | Stainless Steel |
| Model Name | KING S/S FLASK 1.2LTR BLUE 183267 |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Dishwasher-safe |
| Recommended Uses For Product | Coffee, Tea, Water |
| Recommended uses for product | Coffee, Tea, Water |
| Special Features | BPA Free, Cold 24 Hours, Durable Stainless Steel, Hot 24 Hours, Leakproof, Vacuum Insulated |
| Special feature | BPA Free, Cold 24 Hours, Durable Stainless Steel, Hot 24 Hours, Leakproof, Vacuum Insulated |
| Theme | Camping, Travel |
| Unit Count | 1.0 count |
| With Lid | Yes |

## Product Details

- **Brand:** Thermos
- **Capacity:** 1.2 litres
- **Colour:** Blue
- **Recommended uses for product:** Coffee, Tea, Water
- **Special feature:** BPA Free, Cold 24 Hours, Durable Stainless Steel, Hot 24 Hours, Leakproof, Vacuum Insulated

## Images

![Large Stainless King Midnight Blue Drinks Flask - Image 1](https://m.media-amazon.com/images/I/61stnOT1CWL.jpg)
![Large Stainless King Midnight Blue Drinks Flask - Image 2](https://m.media-amazon.com/images/I/71wyR7fm7kL.jpg)
![Large Stainless King Midnight Blue Drinks Flask - Image 3](https://m.media-amazon.com/images/I/81GhwRN1PBL.jpg)
![Large Stainless King Midnight Blue Drinks Flask - Image 4](https://m.media-amazon.com/images/I/71c1vdRdf5L.jpg)
![Large Stainless King Midnight Blue Drinks Flask - Image 5](https://m.media-amazon.com/images/I/61Yn1wl2VWL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: is it smashproof?**
A: I have the smaller version, work with horses. It’s had a boot off numerous horses and sent flying. Knocked of stable doors, closed in stable doors. You name it this has been battered by it. It’s a bit war damaged and dented. But it’s still working!

**Q: How heavy is it?**
A: Using our kitchen scales 620 grams empty, not too heavy in a rucksack.

**Q: where is the flask made.in the USA or ? .**
A: richard,flask is made in China,under a US patent.

**Q: does it have 2 cups?**
A: Hi Mary it only has one cup which is stainless steel with a.plastic lining hope this helps

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent heat retention and very practical for baby formula on the go
*by A***A on 12 May 2026*

I bought this Thermos Stainless King travel flask mainly for preparing formula for my baby while out, after seeing posts online mentioning that it can keep water above 70°C for long periods throughout the day. The quality feels excellent and the stainless steel design feels very durable and well made. The matte black finish also gives it a sleek look while providing a nice grip in the hand. The heat retention is definitely the standout feature. It keeps the water hot for hours, which makes it extremely convenient when travelling or spending long periods out of the house with a baby. Knowing the water stays at a suitable temperature for formula preparation gives extra peace of mind. It seals very securely and has been completely leak proof for me so far, which is especially important when carrying it in changing bags or while travelling. It’s also easy to pour and drink from, and the overall size makes it portable enough for everyday use without feeling bulky. Another plus is that it’s straightforward to clean, I have purchased the OXO bottle cleaning brush for it, which makes cleaning much more convenient. Overall, a very practical and reliable flask that feels worth the investment.

### ⭐⭐⭐⭐⭐ Built Like It Could Survive a Camping Documentary
*by M***N on 14 May 2026*

I bought this Thermos Stainless King mainly for long work days and trips where I wanted properly hot tea without paying service station prices for disappointing coffee. After using it regularly, I can honestly say this thing takes temperature retention very seriously. The first thing that impressed me was just how long it keeps drinks hot. I made tea early in the morning, forgot about it for hours, and it was still properly hot later in the day, not “technically warm if we lower expectations,” but genuinely hot enough to enjoy properly. Cold drinks hold up equally well too. Filled it with iced water during warmer weather and still had ice hanging around much later than expected. The insulation on this flask is great! Build quality feels excellent as well. It has that reassuring “solid chunk of stainless steel” feel that makes you think it could survive being dropped down a hill and still come back asking for more tea. Definitely feels durable enough for everyday use, commuting, travel, or outdoor trips. The twist pour stopper is also far more convenient than I expected. Being able to pour without fully removing the lid is one of those small features that becomes genuinely useful once you start using it regularly. Less heat escapes, less chance of spills, and less fumbling around when half awake in the morning. The built in cup is decent too. Simple, sturdy, and does the job well enough for tea or coffee breaks on the go. It’s also surprisingly comfortable to hold considering it’s attached to what is essentially a giant insulated steel cylinder. Capacity wise, 1.2L is excellent if you drink a lot throughout the day. It’s enough for multiple large cups without constantly refilling. The trade off is that it’s definitely not a tiny lightweight flask. When full, this thing has some heft to it. Not ridiculous, but you’ll notice it in a backpack. Leak proof performance has been great so far as well. I’ve carried it horizontally in bags without any unpleasant surprises, which already puts it ahead of several “premium” travel mugs I’ve owned. The red finish also looks really nice in person. Bright enough to stand out without looking cheap or overly flashy. Overall, this is an excellent flask if you want serious heat retention, durability, and large capacity. Reliable, practical, and built to last. The kind of product you buy once and end up using for years mainly because it stubbornly refuses to stop working properly.

### ⭐⭐⭐⭐⭐ Boiling hot water for long period
*by I***Z on 26 June 2026*

I just bought it recently and wondering why I didn’t purchase it earlier? I boiled water and filled up this flask at 8am and used it last at 8pm. Water was still boiling hot. This flask is great if you are looking for a flask that will keep water at 70° to make baby formula. Pouring it in milk bottle is also very safe and comfortable with no worry of spilling due to the design. I would probably give this as a gift to someone at a baby shower as it will make the night feeds soo much easier.

## Frequently Bought Together

- Thermos Stainless King Flask, Glossy Black, 1.2 L, 33.6 x 11.99 x 33.6 cm, 183267
- THERMOS Stainless King Vacuum-Insulated Compact Bottle, 16 Ounce, Matte Steel
- THERMOS Stainless King Vacuum-Insulated Compact Bottle, 16 Ounce, Midnight Blue

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-13*