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The YETI Rambler Bottle is stainless steel, double-walled, and vacuum-insulated (by the way, so are Hydro Flask bottles), which is just a fancy way of saying you won’t have any metallic aftertaste and it insulates well.
You should expect it to keep ice close to 24 hours and to keep your hot beverages hot for about 5 hours. In fact, we actually had the 360z bottle go a full 72 hours with ice still left, but this was an indoor/outdoor test. If you keep the bottle outside, you’d be pretty lucky to get a full 24 hours.
YETI 36oz bottle vs Hydro Flask 40oz bottle
Even more—just like Hydro Flask—the YETI bottles have a no-sweat exterior, which means regardless of the temperature of the contents inside the bottle, the outside remains relatively unchanged.
Have super-chilled ice water in the bottle? You get no condensation on the outside. It’s really neat.
The one edge that YETI may have over Hydro Flask is that in our tests the YETI bottles are more durable, slightly. When you drop them they dent less severely and are less susceptible to having their insulation compromised from a drop.
Also, this is a personal preference thing, but we like the lid on the YETI bottles better. It has a solid handle vs. the strap-style on Hydro Flasks. You can see the YETI lids here on Amazon.
Hydro Flasks are insanely popular and for the most part they have three advantages over YETI bottles.
First, they’re almost alwaysmore affordable and for a water bottle it’s really hard to justify the higher price tag.
Both have wide mouth openings for adding ice
Secondly, Hydro Flask makes all sorts of bottle sizes (i.e. 40 oz, 18 oz, 12 oz etc. YETI only offers three sizes), neck sizes, lids, straws, and accessories for their bottles, which means consumers have more options. That’s a good thing.
Lastly, Hydro Flasks come with a lifetime warranty while YETI only offers a five-year warranty on their bottles. We’ve had two issues so far with Hydro Flasks (compromised insulation and a broken cap) and Hydro Flask sent out replacements ASAP with hardly any questions. Great customer service.
For the record, we’ve had similar experiences with YETI customer service, but it’s hard to beat a lifetime warranty.