---
product_id: 725939322
title: "Matt Black 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: "€ 86.88"
currency: EUR
in_stock: true
reviews_count: 6
category: "Thermos"
url: https://www.desertcart.fi/products/725939322-matt-black-ultimate-flask-500ml-reusable-insulated-stainless-steel-thermal
store_origin: FI
region: Finland
---

# 24hr hot retention 24hr cold retention rugged stainless steel build Matt Black 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:** € 86.88
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay hot, stay cool, stay unstoppable. 🖤

## Quick Answers

- **What is this?** Matt Black 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?** € 86.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/725939322-matt-black-ultimate-flask-500ml-reusable-insulated-stainless-steel-thermal)

## 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

- • **Comfort Grip, No Sweat:** Double-wall insulation keeps the exterior cool and condensation-free, so your hands stay dry and comfortable.
- • **Spill-Proof Smart Pour:** Innovative two-part stopper controls flow perfectly, preventing leaks while making refills and cleaning a breeze.
- • **All-Day Temperature Mastery:** Keeps your coffee piping hot or your water ice-cold for a full 24 hours—no compromises.
- • **Built to Brave the Outdoors:** Durable stainless steel with protective silicone rings means this flask laughs in the face of drops and scratches.
- • **Adventure-Ready 500ml Capacity:** Lightweight yet tough, this flask fits seamlessly into your daily hustle or weekend escapades.

## Overview

The Thermos Matt Black Ultimate Flask is a 500ml insulated stainless steel bottle engineered with advanced vacuum technology to keep beverages hot or cold for 24 hours. Featuring a rugged, scratch-resistant design with protective silicone rings and a spill-proof two-part stopper, it offers a comfortable, condensation-free grip ideal for professionals and outdoor enthusiasts alike.

## Description

24-Hour Temperature Control Unrivalled temperature retention comes from advanced vacuum insulation technology. Your beverages stay steaming hot for 24 hours or refreshingly cold for 24 hours, making this flask essential for long outdoor adventures. The double-wall stainless steel construction ensures drinks maintain their temperature while the exterior remains comfortable to hold - no sweating with cold drinks or scalding with hot ones. Engineered for the Elements Built to withstand rugged outdoor conditions, this 500ml flask features protective silicone rings and stainless steel construction inside and out. The robust design resists impacts and scratches while maintaining pristine functionality. The innovative two-part stopper system delivers smooth pouring without spills, making it ideal for hiking, camping, or any outdoor pursuit. Adventure-Ready Companion Designed for outdoor enthusiasts who refuse to let weather dictate their plans. This 500ml matt black flask works with hot coffee at sunrise or ice-cold water during midday treks. The compact size fits easily in backpack side pockets or gear bags, while the durable build quality ensures reliable performance throughout your journey. Compatible with Thermos® technology for exceptional insulation. -Keeps drinks hot or cold for 24 hours -Tough stainless steel construction inside and out -Safe-touch exterior with no condensation -Protective silicone for extra durability -Smooth-flow drinking stopper

Review: Real 24 hours - I made tea even after 24 hours, i couldn’t believe my eyes. Lightweight. Best design. I love it
Review: Perfekt!!!

## 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 | B0DSG78H69 |
| Best Sellers Rank | #98,500 in Kitchen ( See Top 100 in Kitchen ) #308 in Cup & Saucer Sets #1,481 in Insulated Bottles |
| Brand | THERMOS |
| Capacity | 500 Milliliters |
| Color | Matt Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (29) |
| Date First Available | 21 April 2025 |
| Item Weight | 280 g |
| Material | Stainless Steel Silicone Polypropylene |
| Model Number | 210350 |
| Product Dimensions | 7.24 x 7.24 x 23.6 cm; 280 g |
| Special Features | Cold 24 Hours, Hot 24 Hours |

## Product Details

- **Brand:** THERMOS
- **Capacity:** 500 Milliliters
- **Colour:** Matt Black
- **Recommended uses for product:** Coffee, Soup, Tea, Water
- **Special features:** Cold 24 Hours, Hot 24 Hours

## Images

![Matt Black 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/61DerzqcHOL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Real 24 hours
*by M***A on 5 January 2026*

I made tea even after 24 hours, i couldn’t believe my eyes. Lightweight. Best design. I love it

### ⭐⭐⭐⭐⭐ Review
*by R***N on 8 November 2025*

Perfekt!!!

### ⭐⭐⭐⭐⭐ Review
*by B***Y on 24 January 2026*

Used this flask for the first time today whilst out fell walking. Filled full with tea/milk at around 7am contents still hot when opened around 12pm for lunch stop, then again still hot at 3pm when I got back to my car for a drink. Very impressed no leaks in my rucksack and perfect size/lightweight keeps everything insulated and hot👍

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**Shop now:** [https://www.desertcart.fi/products/725939322-matt-black-ultimate-flask-500ml-reusable-insulated-stainless-steel-thermal](https://www.desertcart.fi/products/725939322-matt-black-ultimate-flask-500ml-reusable-insulated-stainless-steel-thermal)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-20*