---
product_id: 165914371
title: "THERMOS ALTA SERIES Stainless Steel Mug 18 Ounce, Matte Steel/Espresso Black"
brand: "thermos"
price: "49965CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Thermos"
url: https://www.desertcart.sn/products/165914371-thermos-alta-series-stainless-steel-mug-18-ounce-matte-steel
store_origin: SN
region: Senegal
---

# Leak-proof slide lock lid Keeps drinks hot up to 5 hrs Keeps drinks cold up to 14 hrs THERMOS ALTA SERIES Stainless Steel Mug 18 Ounce, Matte Steel/Espresso Black

**Brand:** thermos
**Price:** 49965CFA
**Availability:** ✅ In Stock

## Summary

> ☕ Stay hot, stay cool, stay unstoppable.

## Quick Answers

- **What is this?** THERMOS ALTA SERIES Stainless Steel Mug 18 Ounce, Matte Steel/Espresso Black by thermos
- **How much does it cost?** 49965CFA 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/165914371-thermos-alta-series-stainless-steel-mug-18-ounce-matte-steel)

## 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 Elegance:** Premium 18/8 stainless steel with a matte finish offers durability that matches your on-the-go lifestyle.
- • **Sweat-Free Grip:** Exterior stays cool and sweat-proof, keeping your hands dry and your style intact.
- • **Temperature Mastery:** Vacuum insulation locks in heat or chill for hours, so your drink stays perfect from commute to meeting.
- • **Spill-Proof Confidence:** Slide lock sealing lid ensures zero leaks, so you can toss it in your bag without a second thought.
- • **Effortless Clean & Carry:** Dishwasher safe with removable seals and a comfort-soft handle designed for seamless daily use.

## Overview

The THERMOS ALTA SERIES 18oz Stainless Steel Mug combines advanced vacuum insulation technology with durable 18/8 stainless steel construction to keep beverages hot for up to 5 hours and cold for up to 14 hours. Featuring a sweat-proof exterior, a leak-proof slide lock lid, and a comfort-soft handle, this matte black travel mug is designed for professionals who demand reliability and style on the move. Dishwasher safe and easy to clean, it’s the ultimate companion for busy days and active lifestyles.

## Description

Keep on rolling with the 18oz Stainless Steel Travel Mug from the ALTA SERIES BY THERMOS. From morning errands to the office, this mug 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. THERMOS vacuum insulation technology keeps coffee and tea hot up to 5 hours. Cold drinks stay icy for up to 14 hours. Exterior stays cool to the touch with hot beverages and sweat-proof with cold. A comfort-soft handle fits perfectly in your hand and a slide lock lid helps prevent spills and leaks. Made with minimal parts that are dishwasher safe and easy to clean. Just fill it up and you're ready to take on the day.

Review: Takes a licking and keeps on ticking! - I love this thing! When you lock the slide lock even under pressure it won’t leak! The open handle is a must have. Able to hang on a car door handle or a wire fence or… Also, Fully (almost) able to disassemble to clean. Only the slide lock doesn’t come off. All of the silicone seals are removable, washable and replaceable. I’m ordering another after 10 months of daily use and abuse on the ranch and job site. Don’t get me wrong, it still keeps my hot coffee hot. I just decided to get another to keep my hot tea hot! Time to retire my leaky Yeti.
Review: Excellent basic Thermos thermal cup. - This was the second of these I have had, my first suffered a crash that broke the vacuum seal, making it inefficient for holding temps. The overall quality has improved since my initial purchase several years ago with some minor improvements in the sealing components and desighn. I bought a duplicate replacement because the first had been so trouble free and efficient at keeping things hot or cold for many hours at a time. It is also simple to maintain, dishwasher safe, and easy to drink from and shut off the well designed lid. It seals very snugly, and the fact that the sliding opening/closing mechanism can double as a bit of good leverage for a good seal and easy take off is a bit of a bonus for cleaning, refilling. Like most Thermos products I have bought and used over my lifetime, it is reasonably priced, provides excellent service, and is very handy to use and carry.

## Features

- STAYS HOT OR COLD: THERMOS vacuum insulation technology for maximum temperature retention of hot or cold beverages. Keeps your morning coffee or tea hot for up to 5 hours and iced drinks cold for up to 14 hours
- EXTREMELY DURABLE: High quality 18/8 stainless steel construction is dependable to take anywhere you go, from morning errands to the office. Includes a sturdy comfort-soft handle
- SWEAT-PROOF: 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
- LEAK-PROOF LID: Slide lock sealing lid is leak-proof when closed for peace of mind. Helps to prevent spills and leaks while on-the go. Made with minimal parts that are easy to disassemble and clean
- TRUSTED BRAND: For over a century, THERMOS brand products have been making everyday life better, every time. Hot stays hot. Cold stays cold. Food and drinks stay fresh. The little things go a long way, so do we

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XYR8BNQ |
| Age Range (Description) | Adult |
| Best Sellers Rank | #57,563 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #263 in Insulated Cups & Mugs |
| Brand | THERMOS |
| Color | Matte Black |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,169) |
| Date First Available | September 16, 2019 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00041205739562 |
| Included Components | Stainless Steel Travel Mug |
| Is Dishwasher Safe | Yes |
| Item Weight | 8 ounces |
| Item model number | TS1309 |
| Manufacturer | Thermos |
| Material Feature | Insulated |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Dishwasher Safe |
| Product Dimensions | 5"W x 8"H |
| Recommended Uses For Product | liquids |
| Reusability | Reusable |
| Shape | Round |
| Size | 18 Ounces |
| Special Feature | Manual |
| Style | Modern |
| Theme | Food & Drink |
| UPC | 041205739562 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** THERMOS
- **Capacity:** 1.1 Pounds
- **Color:** Matte Black
- **Material:** Stainless Steel
- **Special Feature:** Manual

## Images

![THERMOS ALTA SERIES Stainless Steel Mug 18 Ounce, Matte Steel/Espresso Black - Image 1](https://m.media-amazon.com/images/I/61HiFkeO7kL.jpg)

## Questions & Answers

**Q: Can i purchase new gaskets for this cup?**
A: Replacment seal

**Q: Is it stainless on the inside also?**
A: Yes, the model I have is stainless steal on in the inside.  The outside is the hard rubber you see on the handle in the about picture.

**Q: I need a new seal. Mine is sort of loose?**
A: I have no issues with my item.

**Q: With other mugs I have owned depending what position you start the lid you can make it  for a lefty or righty. Is that true with this mug?**
A: True. You can control the turns and make it adjust to right or left hand.  Great mug.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Takes a licking and keeps on ticking!
*by C***F on January 6, 2026*

I love this thing! When you lock the slide lock even under pressure it won’t leak! The open handle is a must have. Able to hang on a car door handle or a wire fence or… Also, Fully (almost) able to disassemble to clean. Only the slide lock doesn’t come off. All of the silicone seals are removable, washable and replaceable. I’m ordering another after 10 months of daily use and abuse on the ranch and job site. Don’t get me wrong, it still keeps my hot coffee hot. I just decided to get another to keep my hot tea hot! Time to retire my leaky Yeti.

### ⭐⭐⭐⭐⭐ Excellent basic Thermos thermal cup.
*by R***N on October 7, 2024*

This was the second of these I have had, my first suffered a crash that broke the vacuum seal, making it inefficient for holding temps. The overall quality has improved since my initial purchase several years ago with some minor improvements in the sealing components and desighn. I bought a duplicate replacement because the first had been so trouble free and efficient at keeping things hot or cold for many hours at a time. It is also simple to maintain, dishwasher safe, and easy to drink from and shut off the well designed lid. It seals very snugly, and the fact that the sliding opening/closing mechanism can double as a bit of good leverage for a good seal and easy take off is a bit of a bonus for cleaning, refilling. Like most Thermos products I have bought and used over my lifetime, it is reasonably priced, provides excellent service, and is very handy to use and carry.

### ⭐⭐⭐⭐⭐ Keeps everything hot
*by P***T on January 7, 2026*

Best travel mug I have ever bought. Keeps things hot for 8 to 10 hours!

## Frequently Bought Together

- THERMOS ALTA SERIES Stainless Steel Mug 18 Ounce, Matte Steel/Espresso Black
- Contigo Superior 2.0 Stainless Steel Travel Mug with Handle with SNAPSEAL Lid, 20oz.
- Ello Magnet 18oz Vacuum Insulated Stainless Steel Travel Mug with Side Handle and Leak-Proof Slider Lid and Built-in Coaster, Keeps Hot for 5 Hours, Perfect for Coffee or Tea, BPA-Free, Holiday Gift

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sn/products/165914371-thermos-alta-series-stainless-steel-mug-18-ounce-matte-steel](https://www.desertcart.sn/products/165914371-thermos-alta-series-stainless-steel-mug-18-ounce-matte-steel)

---

*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-04*