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Hydro Flask

Hydro Flask Water Bottle - Insulated Stainless Steel - Non Spill, Leakproof in 21 Oz Stone

  • Based on 13,571 reviews
Condition: Used - Very Good
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$30.15 Why this price?
Holiday Deal · 14% off was $34.95

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Nov 21
Order within 6 hours and 51 minutes
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Style: 21 Oz


Color: Stone


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, 21 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: 21 Fluid Ounces


Color: Stone


Recommended Uses For Product: Water


Special Feature: TempShield™ insulation, Proprietary Powder Coat


Brand: Hydro Flask


Capacity: 21 Fluid Ounces


Color: Stone


Recommended Uses For Product: Water


Special Feature: TempShield™ insulation, Proprietary Powder Coat


Age Range (Description): Adult


Product Dimensions: 1.12"W x 4.37"H


Model Name: Standard Mouth Flex Cap Bottle


Item Weight: 0.05 Pounds


Material: Stainless Steel


Number of Items: 1


Pattern: Bottle


Included Components: bottle, lid


Product Care Instructions: Dishwasher safe


Base Diameter: 2.8 Inches


Cap Type: Flex Cap


With Lid: Yes


Is Dishwasher Safe: Yes


UPC: 810007834818


Manufacturer: Hydro Flask


Global Trade Identification Number: 18


Item Weight: 0.835 ounces


Department: unisex-adult


Item model number: S21SX010


Date First Available: January 3, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 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
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  • 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

    • Reliable Hydration Bottle
Style: 21 Oz Color: Trillium
I’ve been using Hydroflask since the release. I believe it was 2009 when I purchased my first bottle. Hydroflask has gone through quite a few changes, design wise, changing ownership and adding products. It’s still my go-to hydration bottle. There are probably other bottles on the market equal to Hydroflask but it’s a brand I have found to be reliable. My water stays cold, it doesn’t leak and it can take an occasional drop. The 21oz fit easily into my bag and isn’t to heavy to carry if I’m holding it. I like the matte finish so it isn’t slippery in the hands. The lid quality is good and the handle is easy to grip and hold. A bottle brush fits easily into the bottle for cleaning and the “O” ring on the lid can be removed to scrub it and keep it from getting gross. Overall I highly recommended Hydroflask products. ... show more
Reviewed in the United States on October 26, 2025 by desert lady
    • Keeping it cold
Style: 24 Oz Color: White
I ordered this water bottle for my trip to Aruba and it didn’t disappoint. It kept my water nice and cold. Fit perfectly in my backpack for carrying. Also fits in the console of your car.
Reviewed in the United States on November 13, 2025 by Linda K.
    • Works great
Style: 24 Oz Color: Indigo
My son dropped and dented his old one that came with the straw cap. I was hoping the straw cap would fit this one and it does, all is good great item even if they are a little pricy.
Reviewed in the United States on November 4, 2025 by DPRIMM
    • Ya mi Agua no se calienta y mi café no se enfría gracias a esta botella
Style: 24 Oz Color: Indigo
De verdad que esta es la mejor botella de agua que he comprado, por fin, puedo tener siempre mi agua fría y mi café súper caliente, ya que esta botella me permite conservar las temperaturas de mis bebidas ,tiene un diseño bastante minimalista y no llama la atención, lo que lo hace súper práctico para llevar contigo con cualquier Outfit, el material es súper resistente y no se raya ... show more
Reviewed in the United States on October 20, 2025 by Ismael
    • Favorite brand by far!
Style: 24 Oz Color: Trillium
Other people prefer the Y brand. I like that the cap is easier to remove and fits in my cup holder. Keeps cold for hours.
Reviewed in the United States on November 7, 2025 by Jessica Agner
    • Mouth piece is exposed
Style: 21 Oz Color: AGAVE
Bought this for my commute. Initially I loved this. Perfect size, feels great, quality made. Unfortunately even with the cap on the mouth piece is exposed. I can’t have that with a water bottle for my public transit commute. Probably fine for the house or office.
Reviewed in the United States on November 8, 2025 by Legit Reviewer
    • Hydro flask water bottle
Style: 21 Oz Color: Black
Everything about it is wonderful. I’ve never had an issue with leakage. Great selection of colors. Perfect size.
Reviewed in the United States on November 2, 2025 by Amy Fabbro
    • Easily the best
Style: 24 Oz Color: White
This is easily the best water bottle or even thermos I've ever had in 58 years. It keeps water cold far longer than amy other water bottle I've ever had.
Reviewed in the United States on October 22, 2025 by mownhoj

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