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Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall Vacuum Insulation

  • Based on 37 reviews
Condition: New
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This item is eligible for return within 30 days of receipt

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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Sep 3
Order within 15 hours and 58 minutes
Available payment plans shown during checkout

Style: 21 Oz


Color: Moonshadow Purple


Features

  • 24 hours cold, 12 hours hot
  • TempShield double-wall vacuum insulation
  • Leakproof when closed
  • Pure taste, no flavor transfer
  • Durable stainless steel

Brand: Hydro Flask


Capacity: 1 Fluid Ounces


Color: Moonshadow Purple


Recommended Uses For Product: Water


Special Feature: Vacuum Insulated


Brand: ‎Hydro Flask


Capacity: ‎1 Fluid Ounces


Color: ‎Moonshadow Purple


Recommended Uses For Product: ‎Water


Special Feature: ‎Vacuum Insulated


Age Range (Description): ‎Adult


Product Dimensions: ‎5.75"W x 9"H


Model Name: ‎Standard Mouth Flex Cap Bottle


Item Weight: ‎0.34 Kilograms


Theme: ‎Sport


Material: ‎Stainless Steel


Number of Items: ‎1


Included Components: ‎Bottle


Product Care Instructions: ‎Hand Wash Only


Cap Type: ‎Flex Cap


With Lid: ‎Yes


Is Dishwasher Safe: ‎No


Is Microwaveable: ‎No


Is Oven Safe: ‎No


UPC: ‎840394203737


Manufacturer: ‎Hydro Flask


Item Package Dimensions L x W x H: ‎10.16 x 3.23 x 3.23 inches


Package Weight: ‎0.38 Kilograms


Item Dimensions LxWxH: ‎5.75 x 5.75 x 9 inches


Brand Name: ‎Hydro Flask


Warranty Description: ‎LIFETIME


Suggested Users: ‎Unisex-Adult


Part Number:


Style: ‎21 Oz


Size: ‎1 Ounces


Date First Available: May 10, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 3

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.

Top Amazon Reviews


  • Stay hydrated my friends
Style: 21 Oz Color: Moonshadow Purple
Nice size water bottle, especially for travel. I always buy a water bottle after security and add it to the bottle to take on the plane with me. No leaks and keeps the water cold. I add stickers to all the places I travel
Reviewed in the United States on June 16, 2025 by AmazonGirl

  • Good Bottle
Style: 21 Oz Color: Moonshadow Purple
It holds water and is a pretty color. Semi-flexible handle makes for easy carrying.
Reviewed in the United States on July 1, 2025 by Dylan

  • Dishwasher safe and no leaking!
Style: 21 Oz Color: Moonshadow Purple
These are the best water bottles. They do not leak even after tossing in the dishwasher after every use. They keep water so cold. I refrigerate several and always have one to grab and go..
Reviewed in the United States on May 29, 2025 by suparo

  • Great water bottle
Style: 21 Oz Color: Moonshadow Purple
Loving this water bottle. The handle makes carrying it everywhere easy!
Reviewed in the United States on May 15, 2025 by WAD

  • Love my Hydro Flask!
Style: 21 Oz Color: Moonshadow Purple
Great water bottle in my favorite color and the size fits great in a backpack mesh side pocket. No leaks either.
Reviewed in the United States on May 6, 2025 by Antoinette

  • Great quality everyday bottle
Style: 21 Oz Color: Moonshadow Purple
The media could not be loaded. I am very happy with my purchase, it was well packaged. The design is very nice and I love the color I chose. Definitely leak proof and there aren’t any dents. Easy to open and great functionality, I take it to work, gym or if I’m just heading out for the day. I also bought a small bottom boot which is silicone to protect it from getting bump at the bottom of the bottle and a standard flex straw cap to use more so when I’m going to the gym. ... show more
Reviewed in the United States on December 8, 2024 by kathy-ann springer kathy-ann springer

  • Favorite water bottle!
Style: 21 Oz Color: Moonshadow Purple
Best water bottle I ever had. Easy to clean. Keeps water cold and fresh. No leaking!!
Reviewed in the United States on June 10, 2025 by Jody R.

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