---
product_id: 393091589
title: "Guardian Collection by Thermos 18 Ounce Stainless Steel Travel Tumbler, Black"
brand: "thermos"
price: "R1874"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Thermos"
url: https://www.desertcart.co.za/products/393091589-guardian-collection-by-thermos-18-ounce-stainless-steel-travel-tumbler
store_origin: ZA
region: South Africa
---

# Leak-proof slide lock lid Keeps drinks hot up to 5 hrs Cold drinks stay icy for 14 hrs Guardian Collection by Thermos 18 Ounce Stainless Steel Travel Tumbler, Black

**Brand:** thermos
**Price:** R1874
**Availability:** ✅ In Stock

## Summary

> 🔥 Sip smart, stay unstoppable with Thermos Guardian! 🔒

## Quick Answers

- **What is this?** Guardian Collection by Thermos 18 Ounce Stainless Steel Travel Tumbler, Black by thermos
- **How much does it cost?** R1874 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/393091589-guardian-collection-by-thermos-18-ounce-stainless-steel-travel-tumbler)

## 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

- • **Effortless leak protection:** Slide lock lid ensures zero spills, perfect for your busiest commutes and meetings.
- • **All-day temperature mastery:** Vacuum insulation locks in heat or chill for hours, so your drink is always just right.
- • **Dishwasher safe & easy clean:** Minimal parts mean quick cleanup, so you spend less time washing and more time winning.
- • **Fits your lifestyle on the go:** Compact 18oz size fits most car cup holders—your ultimate travel companion.
- • **Sweat-proof, stay-cool exterior:** No more slippery hands or condensation rings—comfort meets style on every sip.

## Overview

The Guardian Collection by Thermos 18oz Stainless Steel Travel Tumbler features advanced vacuum insulation technology that keeps beverages hot for up to 5 hours and cold for up to 14 hours. Its durable double-wall stainless steel design ensures a sweat-proof, cool-to-touch exterior. The easy-to-use slide lock lid is leak-proof and simple to clean with minimal parts, making it dishwasher safe. Compact and travel-friendly, it fits most car cup holders, making it ideal for professionals on the move.

## Description

Keep on rolling with the 18oz Stainless Steel Travel Tumbler from the ALTA SERIES BY THERMOS. From morning errands to the office, this tumbler keeps drinks protected everywhere you go. Sometimes life comes at you fast. That’s why we designed this ALTA SERIES BY THERMOS product to be the ultimate combination of quality temp insulation, contemporary style and daily reliability that makes short work of any to-do list. This tumbler is engineered with Thermos vacuum insulation technology to keep coffee and tea hot for up to 5 hours. Cold drinks stay icy for up to 14 hours. Slide lock sealing lid is leak-proof when closed for peace of mind. Exterior stays cool to the touch with hot beverages and sweat-proof with cold. THERMOS brand mugs and tumblers are dishwasher safe, top rack recommended. Made with minimal parts that are easy to clean. Just fill it up and you’re ready to take on the day.

Review: Almost too good at its job - You have to let the tea or coffee get to the desired temperature and then close lid. It's scalding hot when you put close the lid. It will stay that way. I learned that the hard way and it was almost an hour later
Review: Wonderful cup - Love this cup so much works awesome. Keeps my coffee hot for hours. Love the way it opens and closes. And comes apart to clean very easy.@

## Features

- Thermos vacuum insulation technology for temperature retention
- Durable double wall stainless steel. Exterior stays cool to the touch with hot beverages and sweat-proof with cold.
- Easy-to-use slide lock lid
- Easy-to-clean, leak resistant lid with minimal parts
- Fits most car cup holders. Dishwasher safe.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XM9KD5Q |
| Age Range (Description) | Adult |
| Best Sellers Rank | #389,291 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #63,365 in Glassware & Drinkware |
| Brand | THERMOS |
| Colour | Black |
| Global Trade Identification Number | 00041205739456 |
| Included Components | Stainless Steel Travel Tumbler |
| Item Weight | 14.2 g |
| Item model number | TS1319 |
| League | ncaa |
| Manufacturer | Thermos |
| Material Feature | Insulated |
| Net Quantity | 1.0 Count |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Dishwasher Safe |
| Product Dimensions | 8.3W x 20.3H Centimeters |
| Recommended Uses For Product | Home, Travel |
| Reusability | Reusable |
| Shape | Tumbler |
| Size | 18 Ounces |
| Special Feature | Dishwasher Safe |
| Style | Modern |
| Theme | Food |
| UPC | 041205739456 |

## Product Details

- **Brand:** THERMOS
- **Capacity:** 510 g
- **Colour:** Black
- **Included Components:** Stainless Steel Travel Tumbler
- **Material:** Stainless Steel
- **Recommended Uses For Product:** Home, Travel
- **Shape:** Tumbler
- **Special Feature:** Dishwasher Safe
- **Style:** Modern
- **Theme:** Food

## Images

![Guardian Collection by Thermos 18 Ounce Stainless Steel Travel Tumbler, Black - Image 1](https://m.media-amazon.com/images/I/51ILg5GFb4L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Almost too good at its job
*by J***Y on 28 August 2023*

You have to let the tea or coffee get to the desired temperature and then close lid. It's scalding hot when you put close the lid. It will stay that way. I learned that the hard way and it was almost an hour later

### ⭐⭐⭐⭐⭐ Wonderful cup
*by S***. on 25 December 2025*

Love this cup so much works awesome. Keeps my coffee hot for hours. Love the way it opens and closes. And comes apart to clean very easy.@

### ⭐⭐⭐⭐⭐ heromos y buen tamaño
*by H***A on 27 June 2025*

excelente tapa. buen tamaño para los espacios en coche y mochila. tapa anti derrame y con sello perfecto. lo puedes manipular con una mano. limpieza a mano o en maquina lava platos. color impecanle y muy bonito

## Frequently Bought Together

- THERMOS ALTA SERIES Stainless Steel Tumbler 18 Ounce, Espresso Black
- THERMOS Stainless King Vacuum-Insulated Travel Tumbler, 16 Ounce, Midnight Blue
- THERMOS ALTA SERIES Stainless Steel Tumbler, 12 Ounce, Slate

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**Shop now:** [https://www.desertcart.co.za/products/393091589-guardian-collection-by-thermos-18-ounce-stainless-steel-travel-tumbler](https://www.desertcart.co.za/products/393091589-guardian-collection-by-thermos-18-ounce-stainless-steel-travel-tumbler)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-15*