Remember Science 101? When we all learned that adult humans are around 70% water? So we all know how important it is to stay hydrated, right? And that’s fine when there’s a water fountain or a coffee shop nearby, but what if there isn’t? Well, Hydro Flasks or Thermo Flasks, that’s what!
You’ve done your research, and you’ve narrowed your shortlist to two. In this straight-talking Hydro Flask vs Thermo Flask review, we take you through the features of both.
Thermoflask Vs Hydro Flask, Which One Should You Buy?
The double-wall vacuum insulated Hydro Flask keeps drinks cool for up to 24 hours. Hot drinks stay hot for up to 12 hours. Sizes include 18 ounces, 32 ounces, 40 ounces, and 64 fluid ounces.
Its wide mouth allows easy pouring and filling, and it looks great. You can choose from several colors and two hydroflask lids. The powder coating makes it sweat-free – you’re less likely to drop it unintentionally. The stainless steel is 18/8 food-grade, so your drink tastes just as it should. It also has a lifetime warranty.
- Design in mind: with it's easy-access wide mouth, the sleek design holds the same volume of liquid as other leading water bottle brands. Also, safety is top-of-mind, as the bottles are made out of...
- Slip-free grip: unlike other leading water bottles, hydro flask has a powder coat, which gives you a solid grip. The powder coat works with the premium tempshield insulation, which prevents...
- JUST THE RIGHT SIZE: Meets your everyday hydration needs in one container, all while keeping it piping hot or ice cold and fitting comfortable and conveniently in your hand or your vehicles' cup...
- INSULATION INNOVATION: The double-walled, vacuum insulated TempShield Insulation, the same technology used in all Hydro Flask products, will ensure that your beverage of choice maintains its...
- INSULATED, FLEXIBLE, AND BUILT TO LAST: Designed with stainless steel pivots and a flexible strap, this cap moves when you do. Plus, it’s made with Honeycomb Insulation to keep drinks cold up to 24...
Pros & Cons
We also love the Thermoflask. We all enjoy a good chilled long drink, or a heavenly hot cup of tea or coffee wherever we are, but it’s not always practical to carry a cooler with you. You may not always have access to a microwave or kettle either.
Thermo Flasks keep your drinks refreshingly cool for up to 24 hours (12 for hot, reviving beverages). It ships with two lids as standard, the Chug Lid, and the straw lid, and the nifty built-in carrying handle means you can safely clip it to your pack.
The Thermo Flask is available in 6 different sizes and a small range of subtle, understated colors. It’s sturdy looking and its powder coating means you don’t need to worry about moisture rings or condensation. It stays cool to the touch from outside.
- VACUUM INSULATION: The ThermoFlask keeps beverages ice-cold for 24 hrs, and hot for up to 12 hrs with double-wall and vacuum insulation. This BPA-Free stainless steel water bottle won’t transfer...
- Chug and Straw Lid: This water bottle comes with 2 lids; an innovative leak-proof Chug lid and a newly improved straw lid that has been enhanced for better flow. Both allow easy one-handed or hands...
- PREMIUM HYDRATION: Our line of insulated hydration solutions come in 24 oz & 40 oz sizes with a variety of colors. Our insulated water bottles are a convenient size that fits in most cup holders,...
- DAILY ADVENTURE: Adventure awaits with ThermoFlask insulated stainless steel water bottles. They help you stay refreshed & hydrated for an active lifestyle. Soups & other hot liquids stay heated for...
- THERMOFLASK QUALITY: Whether you want a reusable water bottle for camping & hiking, an insulated commuter cup, or just want to hydrate sustainably, ThermoFlask has a stainless steel water bottle for...
Pros & Cons
Hydroflask Vs Thermoflask: Our Head-To-Head Comparison
To help you make your final decision, we take a side-by-side comparative approach to the Thermoflask vs the Hydroflask. We look at the similarities, the differences, and the unique features.
To start with, they have a lot of things in common. They’re both very effective at what they do, and there’s a decent choice of sizes and colors. So let’s start by looking at the colors in more detail.
Red And Yellow And Pink And Blue – We Can Drink A Rainbow
We were really taken with the pretty lemon shade of the stainless steel Hydro Flask Water Bottle, with its wide mouth and leak-proof flex cap. The color really brightened our day.
Lemon isn’t the only color choice, though. There’s also black, graphite, frost or white. Brighter colors include citron, flamingo, or watermelon. Keen on green? Choose forest, jade, d-green, olive, or sage. Feeling blue? Opt for blueberry, dark cobalt, lilac, or pacific.
There is a small but select range of colors on offer in the thermoflask by contrast. Options are white, plum, cobalt, capri, and black.
Sizing Up The Opposition
We opted for the 32-ounce Hydroflask. Other hydroflask sizes are 18 ounces, 40 ounces, and 64 ounces. All have wide mouths for easy filling and pouring. (Did you know the typical coffee serving is 5 to 6 ounces, by the way, or that it varies around the world?)
Wondering how much space you’ll need in your messenger bag or backpack to accommodate the hydro flask? The 18-ounce flask is 8.1 inches high, weighs 11.6 ounces, and has a diameter of 2.91 inches (mouth diameter is 2.28 inches). It’s the only Hydro Flask in the range that will fit a standard vehicle cup holder.
The 32-ounce flask is 9.1 inches tall, with a diameter of 3.56 inches and a mouth diameter of 2.28 ounces. It weighs 15.5 ounces. The 40-ounce flask weighs 17.5 ounces: mouth diameter is 2.28 ounces, overall diameter 3.56 inches.
It’s 10.4 inches high. The largest flask in the range, the 64-fluid ounce container, weighs 32.1 ounces, is 10.4 inches tall, and has an overall diameter of 4.7 inches (mouth diameter of 2.28 ounces).
This stainless-steel water bottle known as the thermoflask is double insulated, with a choice of 6 different sizes, from 18 ounces to 64 fluid ounces. Other sizes are 24 ounces, 32 ounces, and 40 ounces.
We found the 32-ounce Thermo Flask just the right size to carry daily. It measures 12.6 inches high with a diameter of 4.6 inches and a weight, when empty, of 1.35 pounds. The lids stay in place well and are leakproof.
Cool Customers And Happy Heaters
The double-wall vacuum insulation and the TempShield technology in the well-designed Hydroflask keeps drinks cold for up to 24 hours. If you like your coffee hot as can be, then you don’t need to worry for 12 hours as long as the lid’s safely in place.
The Thermoflask is also great at ensuring drinks stay ice cold for 24 hours, and wonderfully warm for up to 12 hours. The bottle is devoid of BPA. It’s not prone to rust and stays sweat-free. The outside stays cool to the touch no matter what’s going on with the liquid inside.
The Wide Mouth Flex Cap on the hydroflask has stainless steel pivots and a flexible strap. If the Wide Mouth Straw Lid is more your cup of (iced) tea, you don’t need to worry about making a mess.
The finger loop makes it extra convenient, allowing you to clip your Hydro Flask securely to your pack. It even comes complete with 2 long-lasting rubber straws. It’s not leakproof, however, nor recommended for use with hot liquids. The Thermoflask comes with two lids as standard. You get a leak-proof Chug lid and a straw lid. The lids are made out of PP5 plastic with rubber tips. The vacuum insulated container’s double-wall feature keeps your beverage at just the temperature you like, and the wide mouth makes cleaning easy.
Care And Maintenance
You’re probably wondering if hydroflasks are dishwasher safe? The quick answer is no. To keep them in pristine condition and working well, use mild dish soap and warm (not hot) water in the sink or bowl. Dishwashers can get so hot that the insulation properties of the Hydro Flask can be affected and the powder coat damaged and discolored.
Warranty, Support And Additional Features
Hydroflasks are free of both phthalates and BPA, and the 18/8 stainless steel is food-grade. We also love the lifetime hydroflask warranty and the fact that you can have a choice of lids, the Hydro Flip or Wide Mouth Straw. The stainless-steel means there’s no transfer of flavor from the flask to your drink in either flask. Everything tastes just as it should.
The Thermo flask is perfect “on the go”; the handle on the lid means you can carry it with ease. Its sweat-free exterior means you don’t need to worry about moisture rings on your desk (or any other surface) or condensation in your bag. The bottles are powder coated. The 18-ounce flask will fit most standard vehicle cup holders.
Buyer’s Market – Where To Buy Hydro Flasks
Whether you’ve decided on a Hydro Flask or a Thermo Flask (or a hydroflask or a thermoflask, come to that!) you want to get the best price, the widest choice, and the fastest service. Which is where Amazon undoubtedly has the edge.
Did you know, by the way, Amazon is now the world’s largest online marketplace? Or that back in the early days, it pretty much only sold books?
Hydro Flask Vs Thermoflask: Wrapping It Up
Both products performed well, for both hot and cold options. Both are double-walled with effective insulation, and both have a powder coating to help combat slippery fingers and condensation.
There’s not much in it, but on balance, the Hydro Flask (or hydroflask or even hydraflask) just slipped into the lead. We gave it a score of 4.8 out of 5 stars. The Thermo Flask (aka the thermoflask) scored 4.5.
We admit to being swayed slightly by the sleek design, the lovely hydroflask colors on offer, and the two straws you get with the lid. And on that note, it must be time for coffee?
Hi my name is Larry, a coffee aficionado from the US. I have already visited Colombia, Sumatra, Guatemala, Costa Rica, Ethiopia and Jamaica in my pursuit of finding the best-tasting coffee beans. I currently write from Bali and enjoy the relaxed life that you can find only in Indonesia. Welcome to my coffee world!
Last update on 2021-01-16 / Images from Amazon Product Advertising API.