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Hydro Flask Standard Flex Cap Indigo 18 Oz

  • Based on 260 reviews
Condition: New
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$22.99 Why this price?
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Jul 24
Order within 20 hours and 50 minutes
Available payment plans shown during checkout

Style: 18 Oz


Color: Indigo Blue


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: Indigo Blue


Recommended Uses For Product: Water


Special Feature: Durable,Reusable,Double wall,Leakproof,Dishwasher safe,Cold 24hrs,Hot 12 hours


Brand: Hydro Flask


Capacity: 18 Fluid Ounces


Color: Indigo Blue


Recommended Uses For Product: Water


Special Feature: Durable,Reusable,Double wall,Leakproof,Dishwasher safe,Cold 24hrs,Hot 12 hours


Age Range (Description): Adult


Product Dimensions: 2.85"W x 10.3"H


Model Name: 18 oz Standard Mouth


Item Weight: 10.88 ounces


Theme: Solid


Material: Stainless Steel


Number of Items: 1


Pattern: Bottle


Included Components: Water Bottle


Product Care Instructions: Hand Wash Only


Base Diameter: 2.8 Inches


Cap Type: Flex Cap


With Lid: Yes


Is Dishwasher Safe: Yes


Is Microwaveable: No


Is Oven Safe: No


UPC: 810070084028


Manufacturer: Hydro Flask


Global Trade Identification Number: 28


Item Weight: 10.9 ounces


Department: Unisex-Adult


Item model number: S18SX464


Date First Available: June 18, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jul 24

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


  • Perfect size and keeps drinks cold
Style: 18 Oz Color: Indigo Blue
This water bottle is great. It’s the perfect size for the bottle pocket on my backpack. It keeps the water cold. Larger opening makes cleaning easy. The loop o. The top is great if you want to use a snap link to your belt loop. It also fits in a bicycle water bottle holder!
Reviewed in the United States on May 11, 2025 by M. Fooey

  • Great water bottle
Style: 18 Oz Color: Indigo Blue
My Hydroflask is with me nearly 24/7, I love it! It is durable, leakproof, and fits perfectly into most backpack water bottle holders and vehicle cup holders. I took it with me on a trip overseas and it was wonderful to get fresh, cold water on the other side of airport security to have on the airplane (I won’t name the airline, but let’s just say I refuse to pay for water). I now take it everywhere and can’t imagine going without it. ... show more
Reviewed in the United States on January 19, 2023 by Matt

  • Good Quality
Style: 18 Oz Color: Indigo Blue
Good quality and love the color!
Reviewed in the United States on December 28, 2024 by Amazon Customer

  • Blessed Vessel
Style: 18 Oz Color: Indigo Blue
As soon as I held this hydro flask, I felt a shift in my aura. The cards had warned me of dehydration in my near future (The Tower + The Sun reversed = dry lips and bad decisions), so I heeded the signs and ordered this blessed vessel. It keeps my chamomile tea hot for hours—long enough to finish a full moon reading, light three candles, and convince Marjorie from book club to leave her Capricorn husband. The stainless steel hums softly when Mercury’s in retrograde, which is either magic or my hearing aid. Either way, I’m enchanted. Water tastes better from it, almost… emotionally supportive. If you’re trying to hydrate and realign your third eye—this is the flask, darling. ✨🔮💧 ... show more
Reviewed in the United States on May 30, 2025 by Lili

  • A bit too heavy
Style: 18 Oz Color: Indigo Blue
It’s such a good quality pretty color but it’s to heavy for me…
Reviewed in the United States on November 9, 2022 by Tala haj yahia

  • The one to get
Style: 18 Oz Color: Indigo Blue
The one bottle to get. Better ergonomics, more compact, easier to clean than the other bottles.
Reviewed in the United States on May 25, 2025 by rkogel

  • Good value
Style: 18 Oz Color: Indigo Blue
My daily tea is kept in this bottle. Hold temperature extremely well.
Reviewed in the United States on May 19, 2025 by Nguyen

  • Great for day bags!!
Style: 18 Oz Color: Indigo Blue
My 1L bottle is too big for my day bag, so this one subs in. Very durable, sleek design like you’d expect, and a solid seal to keep things dry.
Reviewed in the United States on July 6, 2024 by Clinton Downs

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