---
product_id: 731872531
title: "Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt"
brand: "thermoflask"
price: "A$248"
currency: AUD
in_stock: false
reviews_count: 5
category: "Thermoflask"
url: https://www.desertcart.com.au/products/731872531-thermoflask-double-stainless-steel-insulated-water-bottle-40-oz-cobalt
store_origin: AU
region: Australia
---

# Leakproof & sweatproof design Keeps drinks hot 12h Keeps drinks cold 24h Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt

**Brand:** thermoflask
**Price:** A$248
**Availability:** ❌ Out of Stock

## Summary

> 💼 Stay cool, stay hot, stay ahead with ThermoFlask.

## Quick Answers

- **What is this?** Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt by thermoflask
- **How much does it cost?** A$248 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/731872531-thermoflask-double-stainless-steel-insulated-water-bottle-40-oz-cobalt)

## Best For

- thermoflask enthusiasts

## Why This Product

- Trusted thermoflask brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Lid Versatility:** Switch effortlessly between a leakproof chug lid and an improved straw lid for hands-free sipping on the go.
- • **Sleek & Durable Build:** Premium BPA-free stainless steel that resists rust, flavor transfer, and sweat—perfect for your daily grind.
- • **Adventure-Ready Capacity:** Generous 40 oz size fits most cup holders and backpack pockets—stay fueled from morning meetings to weekend hikes.
- • **All-Day Temperature Lock:** Double-wall vacuum insulation locks in cold for 24 hours and hot for 12 hours—hydrate like a pro.
- • **Sustainable Hydration Statement:** Join the eco-conscious movement with a reusable bottle designed for style, function, and lasting performance.

## Overview

The ThermoFlask Double Stainless Steel Insulated Water Bottle (40 oz, Cobalt) features advanced double-wall vacuum insulation that keeps beverages cold for 24 hours and hot for 12 hours. Crafted from BPA-free stainless steel, it offers a leakproof, sweatproof design with dual lids—a chug lid and a straw lid—for versatile, one-handed hydration. Its sleek, durable build fits most cup holders and backpacks, making it ideal for professionals and adventurers seeking sustainable, high-performance hydration.

## Description

desertcart.co.jp: Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt : Home & Kitchen

Review: It works great. I went with the 40z to avoid having to refill often. 4 large ice cubes keeps the water cold for about 6-8 hours. Ice cubes left in it empty overnight are still frozen by morning. It's not the most extreme insulation on the market but it's a good compromise with being thinner/lighter which makes it perfect for daily use, filled once or twice throughout the day. A real upside to this design is the 2 tops it comes with. Both are high quality and clever design, unlike many cheaper canteens for sale. The straw spout is fully capped with a softer material that's nice to drink from. But most useful is the handle design. You can comfortably drink and carry from the narrower cap, even when it's completely full, without having to ever touch the wider body. So you've got great control over the bottle no matter what you're doing. It also gives you leverage to open and tighten and the cap so there's never any leaks. This is perfect for people with smaller hands, though the keyhole shaped handle will fit any size hands. It's VERY clever and much more functional than the pivoting strap design on most other canteens. The caps were the big reason I chose this over others and it really does make a difference when I use it every day. It's the main reason I want to leave a review, since some designer made a pretty noticeable improvement with that clever trick. For someone else that complained about the noise, the straw has a pretty high flow rate which is usually nice. To avoid any noise you just have to drink more slowly, like you're sipping through a regular straw. But the second included cap is general purpose, and has a latch mark on the swing-back cap so it won't flop forward while you're drinking or pouring.
Review: I take this when I travel overseas. Its lightweight and easy to pack in a carryon. It keeps liquids cold an entire day and does not leak. It also looks very stylish too. Very pleased with this purchase.

## Features

- VACUUM INSULATED: ThermoFlask keeps drinks cold for 24 hours and hot up to 12 hours with double wall and vacuum insulation. This BPA free stainless steel water bottle will not transfer flavors and will not sweat or rust
- CHUG AND STRAW LID: This water bottle has two lids. Innovative leak proof chug lid and improved straw lid have been improved for better flow Easy to drink with one hand or hands free
- PREMIUM HYDRATION: Our insulated hydration solution series is available in 24oz and 40oz sizes in a variety of colors. Our insulated water bottle is conveniently sized and ready for most cup holders, backpack pockets, and adventure calls
- EVERYDAY ADVENTURE: Adventure awaits with ThermoFlask Insulated Stainless Steel Water Bottle. Stay refreshed and hydrated for an active lifestyle. Soup & other hot liquids will heat for hours and cold drinks stay cold all day
- THERMO FLASK QUALITY: Whether you are looking for a reusable water bottle for camping or hiking, an insulated commuting cup or simply enjoying sustainably hydrated, ThermoFlask has a stainless steel water bottle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Thermoflask |
| Model Number | 50064 |
| Package Dimensions | 38.8 x 13.6 x 11.7 cm |
| Material | Stainless Steel |
| Color | blue |
| Volume | 709.7 Milliliters |
| Size | 1183 ml |
| Special Features | Double Wall, Leakproof, Sweatproof |
| Volume Capacity | 24 オンス |
| Cap Type | Straw Cap |
| Package Weight | 0.77 Kilograms |
| Batteries Required | No |
| Batteries Included | No |
| Material Care Instructions | Stainless Steel Water Bottle |
| Brand Name | Thermoflask |
| Capacity | 40 Fluid Ounces |
| Item Weight | 522 g |

## Product Details

- **Brand:** ThermoFlask
- **Capacity:** 40 Fluid Ounces
- **Color:** blue
- **Recommended Uses For Product:** Water
- **Special Feature:** Double Wall, Leakproof, Sweatproof

## Images

![Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt - Image 1](https://m.media-amazon.com/images/I/31vUAWxa0YL.jpg)
![Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt - Image 2](https://m.media-amazon.com/images/I/418qSvOLYzL.jpg)
![Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt - Image 3](https://m.media-amazon.com/images/I/41XxmfJ7bWL.jpg)
![Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt - Image 4](https://m.media-amazon.com/images/I/41ch2HJWKRL.jpg)
![Thermoflask Double Stainless Steel Insulated Water Bottle, 40 oz, Cobalt - Image 5](https://m.media-amazon.com/images/I/41ihvQeUH7L.jpg)

## Questions & Answers

**Q: Is the 24oz small?**
A: It's about the size around of a 16 oz plastic bottle of soda, but taller.  It fits in my cup holder of my car.  Don't think the larger one would.  Since it keeps ice so well, I often refill it with water on the ice still in it.  I don't consider it small or large.  Like Goldilocks said, It's Just Right.

**Q: Do you sell the chug straw lid separately?**
A: I had ordered a couple different 24oz pictured with chug lids, but I received straw lids. What I have eventually purchased was a 24 oz with both lids, to make sure I got the Chug lid! So ask your questions to make sure you're getting the right product :-)

**Q: Can I purchase a replacement straw lid for the Thermoflask?**
A: Yes. I just went through this for the 40oz Thermoflasks I purchased at Costco. The straw lids are not sold by ThermoFlask directly (on their website) but it is sold by their manufacturer, Takeya, for $10. Www.takeyausa.com

**Q: Is the straw lid insulated?**
A: Good question! The leak-proof straw lid will keep your drinks cold for up to 24 hours and hot for up to 12. It is not insulated.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***S on October 17, 2020*

It works great. I went with the 40z to avoid having to refill often. 4 large ice cubes keeps the water cold for about 6-8 hours. Ice cubes left in it empty overnight are still frozen by morning. It's not the most extreme insulation on the market but it's a good compromise with being thinner/lighter which makes it perfect for daily use, filled once or twice throughout the day. A real upside to this design is the 2 tops it comes with. Both are high quality and clever design, unlike many cheaper canteens for sale. The straw spout is fully capped with a softer material that's nice to drink from. But most useful is the handle design. You can comfortably drink and carry from the narrower cap, even when it's completely full, without having to ever touch the wider body. So you've got great control over the bottle no matter what you're doing. It also gives you leverage to open and tighten and the cap so there's never any leaks. This is perfect for people with smaller hands, though the keyhole shaped handle will fit any size hands. It's VERY clever and much more functional than the pivoting strap design on most other canteens. The caps were the big reason I chose this over others and it really does make a difference when I use it every day. It's the main reason I want to leave a review, since some designer made a pretty noticeable improvement with that clever trick. For someone else that complained about the noise, the straw has a pretty high flow rate which is usually nice. To avoid any noise you just have to drink more slowly, like you're sipping through a regular straw. But the second included cap is general purpose, and has a latch mark on the swing-back cap so it won't flop forward while you're drinking or pouring.

### ⭐⭐⭐⭐⭐ Review
*by S***. on December 23, 2024*

I take this when I travel overseas. Its lightweight and easy to pack in a carryon. It keeps liquids cold an entire day and does not leak. It also looks very stylish too. Very pleased with this purchase.

### ⭐⭐⭐⭐⭐ Review
*by A***A on July 8, 2025*

Great for school day. Every great item. It comes with spare straws and another lids for replacement.

## Frequently Bought Together

- ThermoFlask 40 oz Double Wall Vacuum Insulated Stainless Steel Water Bottle with Spout and Straw Lids, Cobalt
- Flaskars Protective Silicone Boot for 12oz - 40 oz Hydroflask Water Bottles Anti-Slip Bottom Stanley Sleeve Cover Bumper

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-24*