• Doubled Walled Stainless Steel Vacuum Insulation - No matter the outside temperature, double walled stainless steel vacuum insulation keeps beverages hot for up to 12 hours and cold for up to 24 hours.
  • Powder Coating - Our bottles hold up to everyday wear and tear.
  • 3 Lids at No Additional Cost - Making it easy for you to drink your favorite beverage. 
  • Leak Proof Design - Our wide mouth spout, flip, and stainless steel lids come with 100 percent leak-proof reliability.
  • BPA/BPS Free Lids - Great tasting water should be safe to drink, which is why all our plastic lids are BPA/BPS free.
  • Durable and Dependable - Iron Flask products are made with stainless steel so they’re built to last.
  • Filtration Device Compatible - Most consumer filtration units will fit seamlessly with Iron Flask products.
  • Ice Cube Friendly - A wide mouth makes it easy to pop in as many cubes as you’d like.
  • Lifetime Warranty Against Manufacturing Defects - We are committed to your 100% satisfaction.
  • FDA Approved - Every bottle is made from 18/8 stainless steel which is durable, non-toxic, and built to last.

Best Insulated Wide Mouth Water Bottles in Stainless Steel

Welcome to Iron Flask, the top online source for high-quality, sustainable products, including our bestselling wide mouth water bottle. We're excited to offer our customers the best accessories for an active lifestyle, such as our wide mouth stainless steel water bottle with double-walled vacuum technology, which comes with three different lids at no extra cost. Available in sizes ranging from 14 to 64 oz, shop for a wide mouth insulated water bottle today and discover the difference of premium materials and an extensive range of colors and features! 

People love our wide mouth water bottles and the freedom they offer. Pour, chug, or sip your favorite beverage without removing the entire top. One-handed drinking has never been so convenient. Since our double-walled stainless steel bottles are insulated, you’ll be treated to a cold drinking experience all day long. Leak-proof lid options keep your beverage in and germs out. 

The Iron Flask Difference

When searching for your favorite water bottle, you’ve got no shortage of options from which to choose, but Iron Flask products are head and shoulders above the rest. Our wide mouth water bottles are better designed, more durable, and incredibly appealing to the eye. We’ve poured all our best features into a single design, allowing you tailor your hydration experience to your precise needs. Whether you’re dreaming of a wide mouth flask you can easily pour from, a slender bottle that will slip perfectly into your car’s cup holder, or just want stainless steel you know you can depend on for years to come, Iron Flask has what you need.

Wide Mouth Water Bottles

A practical and ultra-durable accessory for when you’re at the gym, on the trail, or anytime you need to stay hydrated, our popular wide mouth water bottle is made with the highest quality materials. Featuring a double-walled vacuum for insulation, our wide mouth stainless steel water bottle is ideal for any kind of weather — it will keep your liquids warm for up to 12 hours and cold for 24 hours.

Our wide mouth water bottle also features three types of lids at no additional cost, making it a convenient choice for all your day-to-day needs. The straw lid gives you easy, drip-free access to icy cold water or your favorite sports drink. The spout lid with a screw-on top provides 100% leak-proof reliability, and the flip lid option with a durable handle makes it easy to carry. Our 14oz, 18oz, and 22oz bottles are cup-holder friendly and thoughtfully designed to keep your beverage of choice close at hand on all your everyday adventures.

Our popular wide mouth water bottle product line comes in a range of sizes to accommodate all your needs, including 14 oz, 18 oz, and 22 oz, which fit into most cup holders. If you prefer a larger volume for your liquids on the go, we also feature the wide mouth water bottle in 32 oz, 40 oz, and 64 oz sizes. You can also choose from a fun selection of colors such as Bubble Gum, Aquamarine, Fire, Kiwi Green, Midnight Black, and more. The wide mouth insulated water bottle also features a sleek powder-coated finish, which is designed for durability while also providing a secure, slip-free grip.

Wide Mouth Stainless Steel Water Bottle

We know the quality of your water is just as important as the quantity. That's why we've designed the best wide mouth stainless steel water bottle for both your health and the environment. Our wide mouth water bottle is made with premium non-toxic stainless steel and 100% BPA-free lids. Unlike some water bottles, you won't have chemicals leaching into your body over time. You can also enjoy a clean flavor since stainless steel will never rust or leave a metallic taste in your mouth.

At Iron Flask, we stand by our products, which is why we offer a lifetime warranty and a 100% satisfaction guarantee for our wide mouth stainless steel water bottle. We also feature all the accessories you need for maximizing your Iron Flask experience, including paracord handles, two protective boot sizes that fit 14oz to 22 oz bottles with the smaller boot option and 32oz to 40oz with the larger boot option, and more.

Built to last and perform like no other, Iron Flask is committed to helping you stay hydrated and reducing plastic waste. Shop for your own top-quality, durable Iron Flask wide mouth water bottle today!

Wide Mouth Bottle Frequently Asked Questions (FAQ's):

What is a wide mouth bottle used for?

The wide mouth water bottle is a classic reusable steel water bottle with a wide mouth for fast, easy hydration when you need it. The Iron Flask wide mouth bottle comes with three additional lids at no extra cost, making it a flexible choice for your daily hydration. 

What is a reusable water bottle?

A reusable water bottle is a great solution for carrying water and beverages in a container that you can safely use over and over again, instead of resorting to disposable plastic bottles that are bad for the environment. The great thing about the Iron Flask line of reusable water bottles is the indestructible stainless steel, which is also easy to clean and sanitize. It is non-toxic, including the BPA-free plastic lids and straws. Our bottles are sturdy and come with additional accessories and several lid options to prevent spills and leaks, meaning your bottle can go everywhere that you go.

What does a wide mouth water bottle mean?

The wide mouth water bottle gets its name from the main design feature: a large opening on the top that makes it easy for filling and pouring. 

What is a wide mouth bottle? 

The wide mouth bottle is one of our most popular stainless steel water bottles. It comes with three lids, each with different features that make it versatile for drinking any type of beverage.

What is a wide mouth straw lid?

The wide mouth straw lid is ideal for when you’re using your Iron Flask bottle to drink cold beverages like water or sports drinks, especially when you want fast access to hydration.

What is a wide mouth spout lid?

Instead of a straw attached to the interior like the straw lid, the spout lid has a screw-on top with a 100% leak-proof design. 

What is a wide mouth flip lid?

Made with BPA-free plastic, the flip lid has a low-profile opening that makes it easy for sipping hot beverages. It can also be snapped shut with the flip-top function and is leak proof. 

What is a wide mouth stainless steel lid?

The stainless steel lid easily screws on and off for 100% leak-proof reliability and also has a built-in handle. 

Are your wide mouth bottles BPA-free?

Stainless steel never contains BPAs. Our wide mouth water bottle lids are also free of BPAs and BPSs. 

How do you clean wide mouth water bottles?

Scrub your bottle daily with soap and water using our handy cleaning brush.


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