---
product_id: 48416039
title: "Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold"
brand: "thermos"
price: "58237CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Thermos"
url: https://www.desertcart.sn/products/48416039-charcoal-ultimate-flask-500ml-reusable-insulated-stainless-steel-thermal-coffee
store_origin: SN
region: Senegal
---

# 24hr hot retention 24hr cold retention durable stainless steel Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold

**Brand:** thermos
**Price:** 58237CFA
**Availability:** ✅ In Stock

## Summary

> 🔥 Sip smart, stay unstoppable.

## Quick Answers

- **What is this?** Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold by thermos
- **How much does it cost?** 58237CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/48416039-charcoal-ultimate-flask-500ml-reusable-insulated-stainless-steel-thermal-coffee)

## 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

- • **Rugged Yet Refined:** Built with premium stainless steel and protective silicone rings to survive every drop and adventure in style.
- • **Adventure-Ready Capacity:** 500ml of perfectly insulated hydration—ideal for long workdays, hikes, or spontaneous weekend getaways.
- • **All-Day Temperature Mastery:** Keeps your coffee steaming hot or your iced drinks refreshingly cold for a full 24 hours—no compromises.
- • **Sleek, Sustainable Statement:** BPA-free, reusable, and designed for the eco-conscious professional who refuses single-use waste.
- • **Effortless Grip & Spill Control:** Double-wall insulation keeps the exterior cool and condensation-free, paired with a smart pour system that prevents leaks.

## Overview

The Charcoal Ultimate Flask by Thermos is a 500ml vacuum-insulated stainless steel bottle engineered to keep beverages hot or cold for 24 hours. Featuring a leak-proof lid, durable construction with silicone protection, and a smart pour system, it’s designed for professionals and adventurers who demand reliable temperature control and rugged style on the go.

## Description

From the manufacturer

Review: Thermos Ultimate beyond compare and a shrewd long term investment an - The Thermos Ultiimate drinks flask unique feature is in its ability to keep drinks scalding hot for 18 hours and hot for 24 hours. I purchased 2 of the smaller size (previous model) one for me and one for my wife about 15 or more years ago and they have never failed to impress on how hot they kept our tea or coffee. They are quite tough and resilient . Unfortunately I dropped mine once too many times , but without blinking instinctively reordered a new one within a heartbeat. Ooops, my eagerness caused me to order the larger 900ml size in error. I will keep it for hot water when we do go out together, as I drink coffee and she drinks Tea. I have already ordered the smaller size ( currently available from TK Max at under £20 and ordered on line for collection tomorrow I can’t wait). Originally I used it for work knowing wherever I was driving to around the country I had a hot coffee to enjoy and even if half drunk a very warm coffee at the end of the day before I started to drive home. I found the smaller size quite adequate to last me throughout the day providing 2 cups of coffee throughout the day. Life without one is almost inconceivable, that is how impressive the Thermos Ultimate flask is. I will keep the larger 900ml size and not return it as even though it is too large for my regular use as I’m sure it will come in useful on the odd but critical situation e.g. Overnight keeping water hot for the morning on a Trip or if I’m in bed unwell a hot drink to hand all day or overnight. It will also be great for cold drinks if going on a picnic or to the seaside with family . It may seem expensive but it truly is a long term investment. 20 out of 10.
Review: Outstanding Flask for All Adventures - I recently purchased the Thermos Ultimate Series Flask in Charcoal, 900 ml, and it has exceeded my expectations in every way. Here’s why it deserves a full 5-star rating: Pros: Exceptional Insulation: This flask keeps my drinks hot for an impressively long time and cold for way longer than 24 hours. Whether I'm out hiking, camping, or just on a long road trip, my beverages stay at the perfect temperature throughout the day and beyond. Durable Build: The build quality is impressive. Made with high-quality stainless steel, it’s robust and can withstand the rigors of outdoor adventures. The charcoal color also gives it a sleek, stylish look. Leak-Proof: The flask is completely leak-proof. I’ve carried it in my backpack, and not a single drop has spilled, which is a huge plus for me. Easy to Use: The lid doubles as a cup, which is very convenient. The pouring mechanism works smoothly, and the wide mouth makes it easy to fill and clean. Perfect Size: At 900 ml, it’s the ideal size for carrying a substantial amount of beverage without being too bulky. It fits well in my backpack and is great for both solo adventures and sharing with a friend.y. It fits well in my backpack and is great for both solo adventures and sharing with a friend. Cons: Weight: Given its solid build and capacity, it’s a bit heavier than some other flasks. However, this is a minor trade-off for the durability and insulation performance it offers. Overall: The Thermos Ultimate Series Flask, Charcoal, 900 ml, is a top-notch product that lives up to its name. It provides outstanding insulation, durability, and convenience, making it an essential item for anyone who enjoys outdoor activities or needs reliable temperature control for their drinks. Despite being slightly heavier, its performance more than makes up for it.

## Features

- Temperature Control - Advanced vacuum insulation maintains drinks steaming hot or refreshingly cold for 24 hours, letting you enjoy your beverage at the ideal temperature all day long
- Rugged Design - Robust stainless steel construction with protective silicone rings withstands drops, bumps, and outdoor adventures while preventing dents and scratches
- Comfort Grip - Double-wall insulation ensures the exterior stays cool with hot drinks and condensation-free with cold beverages, providing comfortable handling in any weather
- Smart Pour System - Two-part stopper design controls liquid flow and prevents spills, while the wide mouth opening makes filling and cleaning quick and simple
- Outdoor Ready - 500ml capacity holds enough liquid for extended adventures, while the lightweight yet durable construction makes it ideal for hiking and camping trips

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B013YMS8QS |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Base Diameter | 7.2 Centimetres |
| Best Sellers Rank | 4,544 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 57 in Insulated Bottles |
| Brand | Thermos |
| Brand Name | Thermos |
| Cap Type | Screw Cap |
| Capacity | 500 microliters |
| Colour | Charcoal |
| Country Of Origin | Malaysia |
| Customer Reviews | 4.7 out of 5 stars 3,382 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Global Trade Identification Number | 05010576041050 |
| Included Components | Lid Cup, Pouring Spout, Protective Silicone Rings, Stainless Steel Bottle, Two Part Stopper |
| Is Oven Safe | No |
| Is the item dishwasher safe? | No |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 7.2W x 23.6H centimetres |
| Item Type Name | Ultimate MKII Series Flask 500ml |
| Manufacturer | Thermos |
| Material Type | Silicone, Stainless Steel |
| Model Name | Ultimate |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Coffee, Soup, Tea, Water |
| Recommended uses for product | Coffee, Soup, 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 | Solid |
| Unit Count | 1.0 count |
| With Lid | Yes |

## Product Details

- **Brand:** Thermos
- **Capacity:** 500 Microlitres
- **Colour:** Charcoal
- **Recommended uses for product:** Coffee, Soup, Tea, Water
- **Special feature:** BPA Free, Cold 24 Hours, Durable Stainless Steel, Hot 24 Hours, Leakproof, Vacuum Insulated

## Images

![Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold - Image 1](https://m.media-amazon.com/images/I/61c1qAnPpmL.jpg)
![Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold - Image 2](https://m.media-amazon.com/images/I/71sKRdQ12ZL.jpg)
![Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold - Image 3](https://m.media-amazon.com/images/I/81aUeX7FfuL.jpg)
![Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold - Image 4](https://m.media-amazon.com/images/I/71HiamJ22VL.jpg)
![Charcoal Ultimate Flask (500ml), Reusable Insulated Stainless Steel Thermal Coffee Cup for Hot or Cold Drinks, Vacuum Sealed Water Flask with a Leak-Proof Lid, 24hr Hot/24hr Cold - Image 5](https://m.media-amazon.com/images/I/61xtsz2ht4L.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this keep the water above 70c* to make baby formula up at intervals during the day?**
A: I haven't measured the exact temperature but it does stay very warm. Particularly if you warm the flask first.

**Q: Is there a cup with it?**
A: Hi The screw in top serves as a cup. Hope this helps? Is a fab Thermos...best ever for keeping things hot and though costly..is worth it. I have both the large & small sizes and my brews stay hot all day at work (which is full time) . VJS

**Q: Is the outer casing weatherproof?**
A: Yes. Stays hot for an extraordinary length of time too!

**Q: Hi, what is the delivery time? The estimate for my order is between 8th October and March next year!**
A: Wahahahhahahahhaha

## Customer Reviews

### ⭐⭐⭐⭐⭐ Thermos Ultimate beyond compare and a shrewd long term investment an
*by S***R on 21 October 2025*

The Thermos Ultiimate drinks flask unique feature is in its ability to keep drinks scalding hot for 18 hours and hot for 24 hours. I purchased 2 of the smaller size (previous model) one for me and one for my wife about 15 or more years ago and they have never failed to impress on how hot they kept our tea or coffee. They are quite tough and resilient . Unfortunately I dropped mine once too many times , but without blinking instinctively reordered a new one within a heartbeat. Ooops, my eagerness caused me to order the larger 900ml size in error. I will keep it for hot water when we do go out together, as I drink coffee and she drinks Tea. I have already ordered the smaller size ( currently available from TK Max at under £20 and ordered on line for collection tomorrow I can’t wait). Originally I used it for work knowing wherever I was driving to around the country I had a hot coffee to enjoy and even if half drunk a very warm coffee at the end of the day before I started to drive home. I found the smaller size quite adequate to last me throughout the day providing 2 cups of coffee throughout the day. Life without one is almost inconceivable, that is how impressive the Thermos Ultimate flask is. I will keep the larger 900ml size and not return it as even though it is too large for my regular use as I’m sure it will come in useful on the odd but critical situation e.g. Overnight keeping water hot for the morning on a Trip or if I’m in bed unwell a hot drink to hand all day or overnight. It will also be great for cold drinks if going on a picnic or to the seaside with family . It may seem expensive but it truly is a long term investment. 20 out of 10.

### ⭐⭐⭐⭐⭐ Outstanding Flask for All Adventures
*by T***W on 17 July 2024*

I recently purchased the Thermos Ultimate Series Flask in Charcoal, 900 ml, and it has exceeded my expectations in every way. Here’s why it deserves a full 5-star rating: Pros: Exceptional Insulation: This flask keeps my drinks hot for an impressively long time and cold for way longer than 24 hours. Whether I'm out hiking, camping, or just on a long road trip, my beverages stay at the perfect temperature throughout the day and beyond. Durable Build: The build quality is impressive. Made with high-quality stainless steel, it’s robust and can withstand the rigors of outdoor adventures. The charcoal color also gives it a sleek, stylish look. Leak-Proof: The flask is completely leak-proof. I’ve carried it in my backpack, and not a single drop has spilled, which is a huge plus for me. Easy to Use: The lid doubles as a cup, which is very convenient. The pouring mechanism works smoothly, and the wide mouth makes it easy to fill and clean. Perfect Size: At 900 ml, it’s the ideal size for carrying a substantial amount of beverage without being too bulky. It fits well in my backpack and is great for both solo adventures and sharing with a friend.y. It fits well in my backpack and is great for both solo adventures and sharing with a friend. Cons: Weight: Given its solid build and capacity, it’s a bit heavier than some other flasks. However, this is a minor trade-off for the durability and insulation performance it offers. Overall: The Thermos Ultimate Series Flask, Charcoal, 900 ml, is a top-notch product that lives up to its name. It provides outstanding insulation, durability, and convenience, making it an essential item for anyone who enjoys outdoor activities or needs reliable temperature control for their drinks. Despite being slightly heavier, its performance more than makes up for it.

### ⭐⭐⭐⭐⭐ Elite flask. Performance justifies the price.
*by D***H on 3 March 2025*

Being an outdoor worker in Wales, I've owned a lot of different flasks - including quite a few Thermos ones. ALL of them before this one had a major flaw - once some of the liquid (tea) was consumed, the cold air that replaced the tea cooled the rest down to a tepid temperature within 4 hours. I've always disliked the easy-pour/flip lids (actually, particularly on the standard 1L Thermos flasks - I've had two and on both of them the stoppers gave up within a year), but this double screw one actually works well, and alongside the excellent build quality of this flask, even half full/half empty (to those philosophers out there - they're the SAME THING!!!) it's still piping hot, 8 hours later. I purchased the 900ml 3 months ago, and so far have appreciated its excellence. There's no denying it's expensive, but you get what you pay for - this isn't Thermocafe or standard Thermos, it's an elite well-designed, practical flask. The only downside for me was that I had to cut some rubber off the cup/lid to allow it to fit in my (Iveco Himatic) van's cup holders. I stopped to write this review in the middle of purchasing the 500ml version, for lunch soup. I'd recommend the 900ml version unreservedly, it is seriously the best flask I've ever owned in terms of keeping stuff hot.

## Frequently Bought Together

- Thermos Ultimate MKII Series Flask 500ml, Grey
- Thermos FFX900 Ultimate MKII Series Flask 900ml, 900 ml, Grey

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-08-10*