Hydro Flask

Hydro Flask Water Bottle - Insulated Stainless Steel - Non Spill Leakproof in 21 Oz Cascade Blue

4.7(10,148)
$26.21$34.95

74+ bought in the past month

About this item

  • 21 OZ CASCADE BLUE BOTTLE: Fill and refill with the Hydro Flask Standard Mouth insulated water bottle with leakproof cap. With a comfortable, flexible handle, the bottle is easy to grab and take anywhere. Double-wall insulation keeps drinks cold up to 24 hours and hot for 12.
  • 24 HOURS COLD. 12 HOURS HOT: The insulated water bottle keeps drinks cold for 24 hours and hot for 12 thanks to double-wall vacuum insulation. TempShield insulation is designed to be lightweight and efficient temperature retention, keeping contents ready to sip.
  • LEAKPROOF: Say goodbye to leaky water bottles. The Hydro Flask Flex Cap is leakproof when closed. Toss it into your bag without worry.
  • FITS CUPHOLDERS: The cupholder-friendly design means your bottle fits seamlessly in most cupholders. Designed for seamless cupholder cohabitation, it's right at home on the open road, on the sidelines, in a pack or wherever you need to set your sips.
  • PURE TASTE: Durable pro-grade stainless steel ensures pure taste and no leftover flavor transfer. So, today's water won't have any taste of yesterday's iced tea.
  • DISHWASHER SAFE: Easy to use and easy to clean, just toss the lid and bottles into the dishwasher. Designed to keep bright color, being dishwasher safe means your favorite Hydro Flask is always at-the-ready.
$26.21
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Product details
BrandHydro Flask
Capacity21 Fluid Ounces
ColorCASCADE
Recommended Uses For ProductWater
Special FeatureVacuum Insulated
Technical specifications
brandHydro Flask
capacity21 Fluid Ounces
colorCASCADE
recommended_uses_for_productWater
special_featureVacuum Insulated
age_range_descriptionAdult
product_dimensions5.75"W x 9"H
model_nameStandard Mouth Flex Cap Bottle
item_weight10.6 ounces
materialStainless Steel
number_of_items1
patternSolid
included_componentsBottle
product_care_instructionsHand Wash Only
cap_typeFlex Cap
with_lidYes
is_dishwasher_safeYes
upc810096852410
manufacturerHydro Flask
global_trade_identification_number00810096852410
departmentUnisex-Adult
item_model_numberS21SX482
best_sellers_rank#4,790 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #97 in Insulated Bottles
date_first_availableFebruary 1, 2024

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Customer reviews

4.710,148 ratings
  1. 5★88%
  2. 4★13%
  3. 3★0%
  4. 2★0%
  5. 1★0%

Customers say

Customers find this water bottle to be of top quality, appreciating its ability to keep drinks cold all day and its perfect size for work backpacks.

★★★★★

Great Product!

Gideon Godinez—November 10, 2025

Stays cold for so long and I LOVE the color. I love the durability and It's fairly lightweight, Read more

★★★★★

Love Zulu H2O bottles!

nikroh—August 4, 2025

Perfect metal water bottle! It has a handle, fits in the car holder, easy to clean, nice color , holds ice cold temperature well, has a good drinking spout, good value for the price and seems to be leak resistant. If only my husband stops losing them - this is Zulu number 3. Read more

★★★★★

Nice mid-size water bottle

jyw—November 23, 2025

This bottle has a nice, wide mouth in case you want to add ice cubes, which also makes it easy to clean. It's a great size for me -- not too big, not too small. Doesn't leak. No complaints. Read more

★★★★★

Glad I purchased. Handy to have

Mike S.—December 17, 2025

Worked well. No leaks, kept temps, and held enough to last me. Read more

★★★★★

Best water bottle ever!

Susan Arnett—August 25, 2025

This is my favorite water bottle of all times. Had another one, but left it on a plane. Immediately replaced it. This is the right size, easy to open, and easy to fill, including adding ice. Love this bottle. Holds enough water but not so much that it weighs too much. Well made, secure seal. Fits my backpack well, and also in the well of my car. LOVE IT! Read more

★★★★☆

East to carry

Jeanne L.—July 25, 2025

It keeps boiling water hot up to about 12 hours. Read more

★★★★★

Great quality, durable

A. Sue—October 27, 2025

I bought both the standard size and a smaller (mini) flask as well; both are perfect for my needs. The quality of these flasks is outstanding -- good material, very durable. I think I would prefer to have a cap with a spout for ease of drinking, so I'll probably order one or two of those. Overall, a great product; well worth the money. Read more

★★★★★

Well Made, Practical

Kyle—November 19, 2025

This is a great bottle. The powder coating feels durable and the lid seals tightly. The loop on the lid is strong and helpful, especially when carrying multiple things. Read more

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