Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Compare What is it? Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler is the perfect tumbler to keep beverages ice-cold for up to 24 hours and sizzling hot for up to 12 hours!

The Ozark Trail vacuum stainless steel tumbler is a double-walled and vacuum-sealed tumbler designed to keep drinks hot or cold for hours together.

Hydro Flask Tumbler is 16 oz True Pint designed with a narrow profile, making it easy to hold and fit into most cup holders. It is the perfect cup for the job.


Compare what does it do? Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler
It ensures your beverages stay ice-cold for up to 24 hours and boiling hot for up to 12 hours! Featuring a double-wall, vacuum insulated design, the Rocky Mountain tumbler is designed to holds 30 oz. of any beverage. Made of heavy-duty, 18/8 stainless steel, the Rocky Mountain tumbler is virtually indestructible.

Ozark is a double-wall, vacuum-sealed tumbler that is perfect for a wide variety of activities like hiking, camping, sporting events, commuting or to use at work.

Hydro Flask
The Hydro Flask is designed to keep your favorite beverage ice-cold from the time you fill your beverage to the time you finish it.


Compare Lid: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler features a clear lid allowing you to check the level of your beverage.

Ozark has a dishwasher-safe lid to prevent spills.

Hydro Flask is designed with a splash-proof lid, insulated press-in lid so you can carry your drink anywhere you go. This lid features the Honeycomb insulation for additional temperature control.


Compare Features: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler
• Kitchen Grade Stainless Steel
• Keeps your beverage cold and fresh all day long
• Double-wall vacuum insulation
• Stays Cold Up To 24 Hours
• Stays Hot Up To 12 Hours
• Clear lid to view the level of your beverage
• Holds 30 ounces of liquid
• BPA free

• Perfect for both hot and cold beverages
• Great for a variety of activities
• Durable, made of high-grade, double-walled stainless steel

Hydro Flask
• Narrow design is easy to hold and fits into most cup holders
• TempShield insulation ensures cold drinks stay cold for up to 24 hours and hot drinks stay hot for up to 6 hours
• Insulated press-in lid features Honeycomb insulation for additional temperature control and easy transport
• Sweat-free due to insulation, eliminating bottle condensation
• Unique powder coat gives you a slip-free grip and extra durability
• Durable 18/8 Pro Grade Stainless Steel construction
• BPA-free and Phthalates-free
• Lifetime Warranty
• Available in 9 colors

Turn Traditional on its Head

Hydro Flask is a True Pint that is smooth and even for the ideal beer-drinking experience. The lip features a slight interior angle allowing to pour your beverage smoothly and also gives a better release of the beer’s aroma. Hydro Flask gives you the experience and comfort of drinking from a traditional glass pint, but with improved Hydro Flask’s no-sweat, double wall vacuum insulation.


Hydro Flask features TempShield, the double wall, vacuum insulated technology that maintains the temperature of your liquid. Simply pour ice water in the morning and you will still have ice in the afternoon. Hydro Flask also keeps your drink hot until you’re ready for it. Also, there is absolutely no condensation or transfer of heat to the outside of the bottle, what so ever.

Durable & Safe

All products are made with 18/8 professional food-grade stainless steel – a metal known for its strength and purity. It also ensures there is no flavor transfer, so today’s coconut water won’t taste like yesterday’s sports drink.

Easy Grip, No Slip

Hydro Flask has a signature powder coat ensuring an easy-grip, sweat-free, extra-durable bottle that you can carry with you everywhere you go. The TempShield technology makes it the lightest weight and slimmest profile insulated bottle.


Compare External Material: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler and Ozark feature a stainless steel construction.

Hydro Flask has a durable 18/8 Pro Grade Stainless Steel construction.


Compare Internal Material: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler – Double-wall vacuum insulation

Ozark – The material is tougher on the outside. Ice doesn’t melt in this tumbler and lasts all day.

Hydro Flask – TempShield double wall insulation.


Compare Dimensions: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler – 8.6 x 4.4 x 4.1 inches

Ozark – 4.1 x 4.1 x 7.9 inches

Hydro Flask – Not found


Compare Weight: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler – 0.8 ounces

Ozark – 1.1 pounds

Hydro Flask – Not found


Compare Price: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler – $19.99

Ozark – $9.74

Hydro Flask – $29.95


Compare Warranty: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler – Not found

Ozark and Hydro Flask – Lifetime warranty


Compare Reviews: Rocky Mountain Tumbler vs Ozark vs Hydro Flask

Rocky Mountain Tumbler

Rocky Mountain Tumbler reviews reveal that the Rocky Mountain Tumbler is pathetic. The lid is not spill proof and spills the beverage over the place.

Rocky Mountain Tumbler did not even keep coffee hot for an hour and a half.

It is not waterproof and it does not keep liquids any warmer than any other insulated mug.

Rocky Mountain Tumbler does NOT live up to its hype. Lid leaks if it gets tipped.

Rocky Mountain Tumbler is not recommended. The lid definitely doesn’t seal.

Rocky Mountain Tumbler definitely does not keep hot beverages hot for 12 hours. It works nothing like advertised. The slider on the lid does not lock.

The steel is so smooth that it is hard to hold if you are carrying it, for example, carrying it to work or home from work.



Ozark reviews say that Ozark is a poor design with a plastic lid.

Ozark is defective, you can hear things between the inner walls rattling, and others seemed stained with oxidation.

Every time you take the lid off you will have to fight with it to remove it, and then when you try to put the lid back on it won’t close.

Ice melted in the Ozark in less than 2 hours.

The stickers that Walmart added left adhesive on the aluminum that is impossible to remove. This adhesive ruined the insulated tumbler.

First time of using Ozark, the coffee was cold in less than an hour.
Filling it half with cubed ice and then cold water, it lasted less than an hour. Doesn’t look or feel like its double walled, it rings like a bell when tapped with a spoon?

These cups do not keep hot liquids hot any better than other insulated cups. Within a half-hour, what was piping hot has become luke warm.

Ozark had little rust spots after using it in salt water once. Rinsed it off after using it while fishing and could see small spots where rust was forming.

The seal on lid won’t stay in place so the lid won’t sit tightly closed.

The size is not great – it is awkward to carry. Given that it doesn’t have a handle of any kind it makes for a clumsy tumbler to carry. Also, the water has a metallic taste.

The lid has an opening for drinking which means that if it is not held upright, you’ll have a mess on your hands. There is no way to cover the opening.


Hydro Flask

Hydro Flask reviews reveal that the Hydro Flask cup came curved. The top was oval and it was all miss shaped.

Hydro Flask is useless without a lid! There are no lids that fit this cup.
Certain spots on the metal rim create a mild electric zing when you touch them with your tongue, much like biting foil if you have metal fillings or like pressing a 9-volt battery to your tongue.
Hydro Flask arrived with a dent in the bottom.

Powder coating has a sharp irregular edge where it meets the metal.

The rim is not fully rounded, but has a 90 degree corner – a definite edge that is very uncomfortable to put your mouth on.
It feels cheap and has visible seams on the inside. Finish looks ruff, not wielded smoothly. Really disappointed that it is not specified that the Hydro Flask doesn’t keep drinks cold or hot for longer than a couple of hours.

Hydro Flask is too light weight, and constantly tips over.
Cup was not polished properly and had rough burrs where you put your lips. The powder coat was not even across the top where the metal cup stops and the coating starts. There is a big ugly seam in the middle of the cup that has rough spots as well.

1 Comment on "Rocky Mountain Tumbler vs Ozark vs Hydro Flask"

  1. Who are you? For a site called “reviews you can trust”, there’s no transparency here. And I own a Rocky Mountain tumbler and it works fantastically well.

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