Iron Flask 40 oz Midnight Black Stainless Steel Water Bottle
Iron Flask 40 oz Midnight Black Stainless Steel Water Bottle
Hero image 0 of Iron Flask 40 oz Midnight Black Stainless Steel Water Bottle, 0 of 7
Best seller
Visit the Iron Flask Store

Iron Flask 40 oz Midnight Black Stainless Steel Water Bottle

1,008 ratings
Iron Flask 40 oz Midnight Black Stainless Steel Water BottleIron Flask 40 oz Midnight Black Stainless Steel Water BottleIron Flask 40 oz Dark Rainbow Stainless Steel Water BottleIron Flask 40 oz Aurora Stainless Steel Water Bottle
Actual ColorMidnight Black

Key item features

  • Premium Construction: Crafted from 18/8 premium grade stainless steel, ensuring durable and long-lasting use for consistent performance.
  • Temperature Retention: Features double-walled vacuum insulation, effectively keeping beverages cold for up to 24 hours and hot for up to 12 hours.
  • Versatile Lids: Includes two BPA-free lids: a Flex Straw Lid and a Spout Lid, offering convenient and interchangeable drinking options.
  • Effortless Portability: Equipped with a high-quality paracord handle, making it simple and secure to carry the bottle anywhere.
  • Leakproof Design: Engineered to be leak-resistant and sweat-free, preventing condensation and spills, ideal for active lifestyles.
  • Generous Capacity: Provides a substantial 40 fluid ounces of net content, ensuring ample hydration throughout the day.
Generated by AI

Specs

Volume capacity, 40 ozMaterial, Stainless SteelWater bottle feature, Wide Mouth, Straw, InsulatedWater bottle lid style, Straw Top, Screw TopCare and maint, Hand-washingIs bpa-free, Y

About this item

Product details

Iron Flask 40oz: Stay hydrated in style with the Iron Flask 40 oz Stainless Steel Water Bottle. Built for performance and adventure, this wide mouth reusable water bottle is made from durable stainless steel and has a 40 oz fluid capacity. It features two interchangeable lids (a straw lid and a spout lid) plus a rugged paracord handle for easy carrying. Whether you're at the gym, on a hike, or commuting to work, the double walled vacuum insulation keeps drinks cold for up to 24 hours or hot for up to 12. BPA free and leak resistant, it’s the perfect companion for everyday hydration.
  • PREMIUM STAINLESS STEEL: made with 18/8 premium grade stainless steel for durable and long-lasting use
  • DOUBLE-WALLED VACUUM INSULATION: keeps drinks cold up to 24 hours and hot up to 12 hours
  • TWO BPA FREE LIDS INCLUDED: comes with a Flex Straw Lid and a Spout Lid for convenient drinking options
  • PARACORD HANDLE FOR EASY CARRYING: high quality paracord handle makes it simple to take your bottle anywhere
  • LEAK RESISTANT AND SWEAT FREE: designed to prevent leaks and condensation perfect for active lifestyles
  • PRODUCT NET CONTENT: 40 fluid ounces of hydration in one bottle
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Volume capacity

40 oz

Material

Stainless Steel

Water bottle feature

Wide Mouth, Straw, Insulated

Water bottle lid style

Straw Top, Screw Top

Warnings

Customer ratings & reviews

4.7 out of 5 stars
stars
1,008 ratings213 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars86% (865)
  2. 4 stars7% (69)
  3. 3 stars2% (24)
  4. 2 stars1% (8)
  5. 1 star4% (42)

Reviews summary

Pros

  • : Features a range of bright ambient colors.
  • : It includes a rope loop for carrying and hanging.
  • : The bottle keeps beverages chilled for hours with ice.
  • : The bottle is well made and resists scratches during use.
  • : The set includes straw and spout options and extra straws.

Neutral

  • : It holds upright but leaks when tipped or from the spout.
Generated by AI
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 213 reviews

Jul 22, 2026
Reviewer name: anonymous
Item details
Color: Aurora
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

my one and only!

i love the bottle.... when i tell you it stay cold it does... i work a 10hr shift and i put ice and water in there at 1am and get off at 12 and the afternoon ice still be in there . so i recommend this to any that want there drinks hot or cold definitely worth buying 😁

Helpful?3V7X5Z4MRL5I17535120420
Oct 25, 2026
Reviewer name: Susan
Top Reviewer
Item details
Color: Dark Rainbow
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This is a really great water/drink bottle for any activity, from going to work/school to hiking/camping %26 anything on between! Really great price as well for everything that it comes with! I would definitely buy this again!

Helpful?3V7X5Z4MRL5I17535120420
Oct 19, 2026
Reviewer name: samantha
Top Reviewer
Item details
Color: Aurora
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I love this water bottle soup for useful. It really helps me hydrated during the second pregnancy of mine.

Helpful?3V7X5Z4MRL5I17535120420
Current price is $24.9862.5 ¢/oz
Price when purchased online
  • Free 90-day returns

How do you want your item?

Try 30 days for just $1! Choose a plan at checkout.
How do you want your item?
Ships to
Arrives by Tomorrow
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
walmart plus

Try 30 days of Walmart+ for just $1!

T&C apply.