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Hydro Flask

Hydro Flask Standard Flex Cap White 18 Oz

  • Based on 2,064 reviews
Condition: New
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$18.88 Why this price?
Save $11.07 was $29.95

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jul 21
Order within 18 hours and 7 seconds
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Style: 18 Oz


Color: White


Features

  • 24 hours cold, 12 hours hot
  • TempShield double-wall vacuum insulation
  • Leakproof when closed
  • Pure taste, no flavor transfer
  • Durable stainless steel
  • BPA-Free
  • Dishwasher safe
  • Not for use on a stove, in a microwave or freezer
  • Keep hot liquids out of the reach of children
  • water bottle, leakproof, insulated, 24 hours cold, 12 hours hot, dishwasher safe, 18 oz, cupholder compatible

Description

Stainless steel, cupholder compatible, fits anywhere—the compact, reusable, refillable Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for quick adventures.

Brand: Hydro Flask


Capacity: 18 Fluid Ounces


Color: White


Recommended Uses For Product: Water


Special Feature: Straw, dishwasher safe, double wall, leak-proof, insulated, leak-proof


Brand: Hydro Flask


Capacity: 18 Fluid Ounces


Color: White


Recommended Uses For Product: Water


Special Feature: Straw, dishwasher safe, double wall, leak-proof, insulated, leak-proof


Age Range (Description): Adult


Product Dimensions: 1.12"W x 4.06"H


Model Name: 18 OZ STANDARD FLEX CAP


Item Weight: 21.95 g


Theme: Sport


Material: STEEL


Number of Items: 1


Pattern: Plain-Coloured


Included Components: bottle, lid


Product Care Instructions: Dishwasher safe


Base Diameter: 2.8 Inches


Cap Type: Flex Cap


With Lid: Yes


Is Dishwasher Safe: No


Is Microwaveable: No


Is Oven Safe: No


UPC: 810497025581


Manufacturer: Hydro Flask


Global Trade Identification Number: 81


Item Weight: 0.774 ounces


Department: teen-boys


Item model number: S18SX110


Is Discontinued By Manufacturer: No


Date First Available: March 31, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • my fav!
Style: 18 Oz Color: White
The Hydro Flask Stainless Steel Standard Mouth Water Bottle is a game-changer! With its double-wall vacuum insulation, drinks stay cold for hours, which is perfect for outdoor adventures or just staying hydrated throughout the day. The flex cap makes it easy to carry and pour without spills. I love the durable design and how easy it is to clean. Plus, it comes in so many fun colors! It’s become my go-to water bottle for everything—highly recommend! ... show more
Reviewed in the United States on October 18, 2024 by Yaime
    • Perfect size
Style: 18 Oz Color: White
This has easily become a favorite water bottle. It holds ice well and is the perfect size to still be able to carry everywhere. I love decorating mine with stickers.
Reviewed in the United States on March 7, 2024 by Monica
    • great size
Style: 18 Oz Color: White
Perfect size to fit in side pockets of a backpack. Not too tall & diameter is great.
Reviewed in the United States on May 26, 2025 by Debra R.
    • Nice waterbottle.
Style: 18 Oz Color: White
I am very glad to have a hydro flask. I was very scared that it was going to be a fake but I did some research and I am pretty sure it's real. Even if it is fake, it keeps my water cold all day and looks great.
Reviewed in the United States on November 20, 2022 by John
    • Works great!
Style: 18 Oz Color: White
This bottle keeps water cold for a very long time. I added cold water and a few ice cubes to it one morning. Despite being in a warm car part of the day and on the counter overnight, the water was still icy cold the next morning. This thing really works!
Reviewed in the United States on August 24, 2023 by S. T. Maas
    • Keeps water cold for a little and dents easily
Style: 18 Oz Color: White
The water bottle is fine, it’s easy to use and aesthetically pleasing. My only issue is how easy it dents. I dropped it once and there is a huge dent, my other water bottles do not do this. Other than that, it keeps my water cold and works well.
Reviewed in the United States on August 24, 2024 by L.D.
    • Best water bottle
Style: 18 Oz Color: White
Hydro Flask water bottles are the best! This is a nice size for everyday use without being too large to slip into a purse or backpack. Fits better in car cup holders than the bigger ones. My taller one falls out of cup holder if I have to stop suddenly. This size is perfect! Like the white color too. ... show more
Reviewed in the United States on December 29, 2023 by Connie B. Wolfe
    • Nicely finished.
Style: 18 Oz Color: White
My fortunate daughter loves it and takes the school every day and it seems indestructible and serves a purpose well.
Reviewed in the United States on January 4, 2024 by WTK

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