Hydro Flask Insulated Water Bottle Review [Wide Mouth]

Hydro Flask Insulated Water Bottle Review

Hydro Flask Insulated Water Bottle​: QUICK OVERVIEW



​BPA Free


What We Like
  • ​Durable construction
  • ​"Powder coat" makes for firm grip
  • ​Wide-mouth design compatible with several lids as well as many backcountry water filters
What We Don't Like
  • ​Doesn't always keep beverages hot as long as advertised
  • ​Doesn't fit standard bicycle bottle racks
  • ​A bit on the heavy/bulky side for certain outdoor activities

​Whether it's a lazy summer's day spent poolside, a game of touch football at the park, or a vigorous day hike in the foothills, staying hydrated is easy with the Hydro Flask Insulated Wide Mouth Water Bottle on hand.

The sturdy construction of pro-grade stainless steel and BPA-free plastic and the broad mouth define this water bottle, which comes enhanced by Hydro Flask's patented TempShield™ Insulation and a grippy powder coat. 

It's a fine choice for beverages of both the hot and cold variety, and for settings from the office desk and the playing field to the backcountry campsite and the sea kayak.

​Hydro Flask Insulated Water Bottle Review

 Hydro Flask 32 oz Double Wall Vacuum Insulated Stainless Steel Leak Proof Sports Water Bottle

​Who Is This Product For?

The Hydro Flask Insulated Wide Mouth Water Bottle serves the needs of just about anybody looking to remain hydrated all day long.

It's a handy and leakproof container to bring along to work or school, stow in the car for a road trip, or haul along for hiking, ski touring, snowshoeing, kayaking, paddleboarding, and other outdoor adventures.

Whatever your beverage of choice--from steaming coffee or tea to ice water or a fresh-made smoothie--the Hydro Flask Insulated Wide Mouth is designed to keep the hot stuff hot and the cold stuff cold for hours on end as you go about the day's work or play.

​What's Included?

The Hydro Flask Insulated Wide Mouth Bottle comes with the Hydro Flask Flex Cap, which includes a flexible holding strap secured with stainless-steel pivots.

The Wide Mouth is also compatible with Hydro Flask's Wide Straw and Wide Flip lids, but those are sold separately.

You can choose between four different sizes of water bottle:--18 oz. (532 ml), 32 oz. (946 ml), 40 oz. (1180 ml), or 64 oz. (1900 ml), the latter being basically a growler-sized jug--and a wide array of colors, from flamingo pink and mango orange to pure black or white.

​Overview of the Features

At the (literal) core of the Hydro Flask Insulated Wide Mouth Bottle's performance is the TempShield™ construction: a double-walled, vacuum insulation designed to keep cold liquids cold for 24 hours and hot ones hot for 12 hours.

The exterior of the Wide Mouth boasts the Hydro Flask powder coat, which, along with the TempShield™ Insulation, helps ward against the formation of exterior condensation and improves both the bottle's grip and its all-around durability.

A Hydro Flask bottle filled with piping-hot goodness won't be hot to the touch.

In terms of materials, the Hydro Flask Insulated Wide Mouth Bottle is made from BPA- and phthalate-free plastic and food-grade 18/8 stainless steel meant to keep your beverage tasting pure and untainted.

The Flex Cap comes with its own Honeycomb Insulation to contribute to the sealed-off temperature maintenance. Its strap makes the bottle easy to hoist and carry around.

As mentioned above, you can also choose to accessorize with the Hydro Flask Wide Straw Lid or Wide Flip Lid for convenient on-the-go sipping.

Backcountry travelers will appreciate the Wide Mouth's compatibility with many water filters.

All the Hydro Flask Wide Mouth sizes have mouth diameters of 58 mm (2.28 in.) except for the 40-oz. bottle, which has a 48.5-mm (1.91-in.) opening. These broad openings make it easy, for example, to plunk in some ice cubes.

The width of the Wide Mouth's bottom, meanwhile, ranges from 74 mm (2.91 in.) for the 18-oz. bottle, 91 mm (3.56 inches) for the 32- and 40-oz. bottles, and 119.6 mm (4.7 inches) for the hefty 64-ouncer.

The 18-oz. Wide Mouth stands the shortest at 199 mm (7.8 inches) tall, while the 40-oz. bottle is the tallest at 260 mm (10.2 inches).

Weight-wise, the bottles range from 343 grams for the 18-oz. bottle to 794 grams for the 64-oz. jug.

​How to Use

Obviously using a water bottle such as the Hydro Flask Insulated Wide Mouth isn't rocket science. That said, the company recommends this handy test to make sure the bottle's insulation is working as it should.

Place the bottle on a sturdy surface and fill it with boiling water; don't hold it while you do so. Keep the cap off. After roughly five minutes have passed, feel along the exterior of the bottle below the neck.

If you notice any "hot spots," the bottle's insulation is compromised and you should be able to replace your Wide Mouth from the company or potentially through a third-party retailer you purchased from.


Hydro Flask offers a whole range of different water bottles, including Standard Mouth models.

You might choose instead one of the company's coffee mugs or flasks, or maybe the specialized party- or campfire-ready containers it offers for beer, wine, and spirits.

Keep in mind that you'll likely want a different size/design of water bottle when you're looking to attach it to a bicycle bottle rack, as the Wide Mouth is too hefty for most standard racks.


Hydro Flask's double-wall vacuum TempShield™ Insulation and powder-coat exterior make the company's Wide Mouth water bottle an excellent choice for storing both hot and cold beverages.

The durable construction particularly recommends the Wide Mouth for outdoor and sporty activities (though you might consider outfitting it with the Hydro Flask Straw or Flip Lid for the purpose), but really it's a fine choice for anybody looking for a long-lasting, up-for-hard-knocks hydration companion.