Iron Flask

One Gallon Water Bottle


Iron Flask

One Gallon Water Bottle


Show Recommended Accessories

* Once the order is placed, no changes can be made to the address or the product.


128 oz Insulated Stainless Steel Water Bottles

At Iron Flask, we're big on hydration — and our bottles are, too. Meet our largest bottle size, the 1 gallon water bottle. Available in a variety of colors, the 128 oz water bottle is perfect when you need enough hydration to last throughout the day. Durable, dependable, and affordable, the gallon water bottle provides everything you need to quench your thirst for the long haul. The 128 oz water bottle has an extra wide opening mouth design, which makes it convenient for filling up with water or other drinks.

One Gallon Reusable Water Bottles

Just like all of our best-selling water bottles, the 1 gallon water bottle has a long list of benefits. 

  • Made with 18/8 stainless steel, which is non-toxic and never imparts a metallic flavor.
  • Ultra-dependable, the bottle also never rusts, making it a breeze to keep clean and sanitize.
  • Double-wall vacuum insulation keeps drinks hot or cold for hours, so you can enjoy your favorite drinks at just the right temperature.
  • Easy to carry with a durable handle., plus a leak-proof spout lid.
  • Leak-Proof Spout Lid that ensures no spills when you’re on the move.

128 Oz Water Bottle

Our customers love the gallon water bottle size because it allows them to stay hydrated with less frequent refills — an advantage over smaller models. This especially handy feature of the 128 oz water bottles is just one of the many reasons why it’s one of our best-selling items at Iron Flask. The gallon water bottle might look big, but it’s super easy to carry thanks to a lightweight stainless steel design and a well-designed handle. For its huge volume of liquid, excellent features, and all around best in class design, the 128 oz water bottle has become the go-to water bottle for health-conscious go-getters. 

The Iron Flask  128 ounce water bottle is available in a selection of fun, eye-catching colors, making it easy to stay hydrated and also look stylish. Choose from classic colors like Twilight Blue, Gray, and Black. Or add a pop of color to your everyday gear with a large water bottle in Bubble Gum, Blue Waves, Sky pattern, Peach, and more.

1 Gallon Insulated Stainless Steel Water Bottle

Keeping a large water bottle in your collection of reusable drinkware is super helpful when you’re with a group and you need to pour drinks into smaller cups. Along with its many functional benefits, the 1 gallon water bottle is also an easy and convenient way to stay on top of your daily hydration goals. In fact, according to experts, a person should drink about half a gallon per day — so a 1 gallon water bottle puts you ahead of the curve in the game of healthy hydration! 

Our 128 oz insulated water bottle is already a great product, so make it even better with functional accessories. Don’t forget to get a cleaning brush. Designed with a long handle, the cleaning brush allows you to easily scrub your bottle squeaky clean after each use.

Shop for your own 128 oz bottle today — it comes with a lifetime warranty against manufacturing defects and 100% satisfaction guarantee.