---
product_id: 48416037
title: "Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping"
brand: "thermos"
price: "$86.75"
currency: USD
in_stock: true
reviews_count: 13
category: "Thermos"
url: https://www.desertcart.us/products/48416037-charcoal-ultimate-drinks-flask-900ml-24h-hot-24h-cold-adults
store_origin: US
region: United States of America
---

# 24hr hot retention 24hr cold retention Durable stainless steel build Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping

**Brand:** thermos
**Price:** $86.75
**Availability:** ✅ In Stock

## Summary

> 🔥 Sip in style, stay hot or cold all day long! ❄️

## Quick Answers

- **What is this?** Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping by thermos
- **How much does it cost?** $86.75 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/48416037-charcoal-ultimate-drinks-flask-900ml-24h-hot-24h-cold-adults)

## 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

- • **Adventure-Proof Design:** Rugged stainless steel with silicone guards resists dents and scratches on the go.
- • **Generous 900ml Capacity:** Perfectly sized for long workdays, hikes, or road trips—stay fueled without constant refills.
- • **Effortless Spill Control:** Innovative two-part stopper ensures smooth pouring without messy drips or leaks.
- • **All-Day Temperature Mastery:** Keeps drinks hot or cold for a full 24 hours—your beverage’s personal climate control.
- • **Comfort Grip, Zero Condensation:** Double-wall insulation keeps the exterior cool and dry for a confident hold anytime.

## Overview

The Thermos Charcoal Ultimate Flask (900ml) is a premium insulated stainless steel bottle engineered to keep beverages hot or cold for 24 hours. Featuring advanced vacuum insulation, a leak-proof two-part stopper, and a durable yet lightweight design with protective silicone rings, it’s built for professionals and adventurers who demand reliable temperature control and spill-free convenience throughout their busy day.

## Description

From the manufacturer

Review: 🏕️ The Ultimate Hot-Shot Flask That Defies the Cold! ☕ - Quick Breakdown: Pros & Cons Cons ❌ Exterior metal is incredibly lightweight and can dent if it takes a hard fall onto rocky ground. ❌ Lacks a built-in handle or carry strap which makes gripping it with bulky winter gloves tricky. ❌ The protective silicone rings on the body can slide out of place during rigorous cleaning. Pros ✅ Absolute thermal wizardry that locks in scalding temperatures for a full 24 hours. ✅ Innovative two-part pouring stopper regulates flow and completely stops messy splashes. ✅ Remarkably lightweight at just 390 grams so it never drags down a heavy backpack. ✅ Sleek and slim 8.2cm base diameter drops easily into standard water bottle side pockets. 🚀 Deep Dive: Why This Thermal Companion Dominates the Outdoors! Gear up, outdoor adventurers and caffeine enthusiasts! The Thermos Charcoal Ultimate Flask (900ml) is an absolute heavyweight champ in the world of temperature control, even if its physical weight is delightfully feather-light. 🌟 The real magic happens the moment the lid is twisted shut. This engineering marvel uses premium insulation to lock in extreme heat, keeping soups, coffee, or tea steaming hot for an entire day. No pre-heating required! It completely defies chilly weather, making it a reliable asset for long mountain treks, early morning job sites, or extended road trips. 🏔️🚗 Pouring is a dream thanks to the dual-component stopper mechanism. Instead of removing the entire plug and letting precious steam escape, a quick partial twist lets liquids flow smoothly and predictably without annoying drips or splatters. The outer lid pulls double duty as a perfectly sized cup, saving precious packing space. ☕ While the lightweight stainless steel shell requires a bit of care to avoid battle scars and dents from accidental drops, the weight savings on the trail are worth it. For anyone needing dependable, long-lasting thermal performance packed into a sleek, backpack-friendly frame, this charcoal beauty delivers the goods! 🎒✨
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.

## 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 - 900ml 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 | B013YMS8RM |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Base Diameter | 8.2 Centimetres |
| Best Sellers Rank | 10,265 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 96 in Insulated Bottles |
| Brand | Thermos |
| Brand Name | Thermos |
| Cap Type | Two-piece stopper |
| Capacity | 900 ml |
| 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 | 05010576041104 |
| 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 | 8W x 30H centimetres |
| Item Type Name | Ultimate MKII Series Flask 900ml |
| Manufacturer | Thermos |
| Material Type | Silicone, Stainless Steel |
| Model Name | FFX900 |
| 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 | Durability,Lightweight |
| Special feature | Durability,Lightweight |
| Theme | Solid |
| Unit Count | 1.0 count |
| With Lid | Yes |

## Product Details

- **Brand:** Thermos
- **Capacity:** 900 Millilitres
- **Colour:** Charcoal
- **Recommended uses for product:** Coffee, Soup, Tea, Water
- **Special feature:** Durability,Lightweight

## Images

![Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping - Image 1](https://m.media-amazon.com/images/I/618DdFWdwpL.jpg)
![Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping - Image 2](https://m.media-amazon.com/images/I/71thE1w2dCL.jpg)
![Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping - Image 3](https://m.media-amazon.com/images/I/81zfSsUA8FL.jpg)
![Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping - Image 4](https://m.media-amazon.com/images/I/71HiamJ22VL.jpg)
![Charcoal Ultimate Drinks Flask (900ml) 24h Hot | 24h Cold | Adults/Mens stainless steel metal thermal insulated leakproof drinks water bottle with coffee cup/mug lid for travel, camping - Image 5](https://m.media-amazon.com/images/I/61oNpUZ9NwL.jpg)

## Available Options

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

## Questions & Answers

**Q: I've been an idiot and lost the cup/outer lid of the flask. can I buy spare parts from anywhere? also, will not having the cup/outer lid on reduce the**
A: Yes, these are available directly from Thermos.
https://www.thermosonline.co.uk/store/Spare-Parts/sc_95

**Q: I have lost the screw in tops for my Thermos. Can any one tell me if these pieces can be attained on their own ?**
A: Try https://www.thermosonline.co.uk/store/Spare-Parts/

**Q: i am needing a new screwcap with seal for thermos ultimate 900 as my seal has become loose wondering where to purchase one thanks**
A: Flasks online.. I’ve used them to order a replacement cap

**Q: How does it pour?**
A: Unscrew the 'cork' a few turns then pour (practice over the sink at first) OR for more control, remove the cork completely.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 🏕️ The Ultimate Hot-Shot Flask That Defies the Cold! ☕
*by T***⚡ on 4 June 2026*

Quick Breakdown: Pros & Cons Cons ❌ Exterior metal is incredibly lightweight and can dent if it takes a hard fall onto rocky ground. ❌ Lacks a built-in handle or carry strap which makes gripping it with bulky winter gloves tricky. ❌ The protective silicone rings on the body can slide out of place during rigorous cleaning. Pros ✅ Absolute thermal wizardry that locks in scalding temperatures for a full 24 hours. ✅ Innovative two-part pouring stopper regulates flow and completely stops messy splashes. ✅ Remarkably lightweight at just 390 grams so it never drags down a heavy backpack. ✅ Sleek and slim 8.2cm base diameter drops easily into standard water bottle side pockets. 🚀 Deep Dive: Why This Thermal Companion Dominates the Outdoors! Gear up, outdoor adventurers and caffeine enthusiasts! The Thermos Charcoal Ultimate Flask (900ml) is an absolute heavyweight champ in the world of temperature control, even if its physical weight is delightfully feather-light. 🌟 The real magic happens the moment the lid is twisted shut. This engineering marvel uses premium insulation to lock in extreme heat, keeping soups, coffee, or tea steaming hot for an entire day. No pre-heating required! It completely defies chilly weather, making it a reliable asset for long mountain treks, early morning job sites, or extended road trips. 🏔️🚗 Pouring is a dream thanks to the dual-component stopper mechanism. Instead of removing the entire plug and letting precious steam escape, a quick partial twist lets liquids flow smoothly and predictably without annoying drips or splatters. The outer lid pulls double duty as a perfectly sized cup, saving precious packing space. ☕ While the lightweight stainless steel shell requires a bit of care to avoid battle scars and dents from accidental drops, the weight savings on the trail are worth it. For anyone needing dependable, long-lasting thermal performance packed into a sleek, backpack-friendly frame, this charcoal beauty delivers the goods! 🎒✨

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Absolutly Flawless!
*by A***S on 17 April 2026*

The best flask I never knew I needed. It keeps tea piping hot for literally hours. Very easy to pour from the spout and the fact I don't have to remove the lid altogether ensures drinks will remain hot. The lid feels secure when you twist it shut and does not feel like it will come loose when traveling to ensure it wont leak. With a 900ml capacity, it will keep me going all day without the need for top ups. Love the black and orange colour scheme and although it has protection top and bottom, I bought the official thermos pouch to store it in as the matt black finish is painted. It is just about the right size to fit in most car cup holders and easily fits in my backpacks side pockets. Hoping to enjoy drinking from it for years to come 🤞

## Frequently Bought Together

- Thermos - Charcoal Ultimate Flask (900ml), 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
- Thermos - 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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-24*