💧Hydrate like a boss—cold, hot, leakproof, and always ready to roll.
The Hydro Flask 21 oz Standard Mouth Flex Cap bottle combines advanced double-wall vacuum insulation to keep beverages cold for 24 hours or hot for 12, with a leakproof design and durable stainless steel construction. Its cupholder-friendly size and dishwasher-safe materials make it the perfect companion for busy professionals seeking reliable hydration on the go.
| Brand | Hydro Flask |
| Capacity | 21 Fluid Ounces |
| Color | Black |
| Recommended Uses For Product | Water |
| Special Feature | Cold 24 Hours, Leakproof, Dishwasher Safe |
| 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 |
| Theme | Sport |
| Material | STEEL |
| Number of Items | 1 |
| Pattern | Solid |
| Included Components | bottle, lid |
| Product Care Instructions | Hand Wash Only |
| Base Diameter | 7.1 Centimeters |
| Cap Type | Flex Cap |
| With Lid | Yes |
| Is Dishwasher Safe | Yes |
| Is Microwaveable | No |
| Is Oven Safe | No |
| UPC | 810497025680 |
| Manufacturer | Hydro Flask |
| Global Trade Identification Number | 00810497025680 |
| Item Package Dimensions L x W x H | 10.31 x 3.23 x 3.19 inches |
| Package Weight | 0.4 Kilograms |
| Item Dimensions LxWxH | 1.12 x 1.12 x 4.37 inches |
| Brand Name | Hydro Flask |
| Warranty Description | LIFETIME |
| Suggested Users | girls |
| Part Number | S21SX001 |
| Model Year | 2020 |
| Style | 21 Oz |
| Size | 21 Ounces |
| Sport Type | Track & Field |
M**A
Favorite water bottle.
Easy to carry everywhere ( work, home, gym, on the go ). Love the color and how it keeps the water cold after hours of adding ice. I can’t drink water that is room temperature, even in the cold I have to add ice. Does not leak and I love the big opening. I’m not a fan of water bottles with straws or sip straws or other openings where barely any water comes out or you have to suck on it for the water to come out. I think this opening helps me drink a lot more water. And I like to refill it more than my 32oz, but it has been helping me a lot with my water intake. It is easy to wash. I also take it with me to the gym and fits in every cup holder that the machines have for your bottle. With my 32oz I have gotten some of them stuck in the cup holder or with 64oz I have to leave it right next to the machine. But with this one it is easy to take a quick sip or long sip. It is easy to open and close. I just bought another one in the other shade of purple because I am obsessed with it. Definitely a perfect replacement for your water bottles ( lost 2, and broke 1 ) and over other good brands this is so far my favorite. Highly recommend it, worth the price!
D**C
Does the job keeping liquids very cold or very hot
Sleek , durable and keeps your liquid very cold or very hot for a long timeI love the top of this water container you can easily carry it and it's fit good so there is no leakageComes in great colors
K**N
Great water bottle!
Great, functional water bottle for daily use. The size is perfect for on the go and it keeps the water cool throughout the day.
B**E
Excellent quality.
Keeps beverages cold in very hot weather. Fits in the cupholder of my car. Does not leak or sweat.
R**A
The Everyday Hydration Hero
The Hydro Flask 24 oz is a near-perfect blend of form and function. Ideal for day hikers, urban commuters, and anyone who wants reliable temperature control in a stylish package. While it’s not the cheapest bottle out there, its performance and durability more than justify the price.
A**E
Very good water bottle!
This water bottle is great! The water stays cold for hours, easy to clean, and doesn't leak. Worthwhile purchase.
A**L
Great water bottle.
Great looking water bottle, has a good seal, used it for about a year, held up well, love the color too!
S**1
Practical and sturdy
Keeps my drinking water cool or hot for the entire day. It's build is sturdy and fits perfectly in my car cup holder. Great color too.
Trustpilot
1 day ago
2 weeks ago
