💧Hydrate like a boss—cold, hot, and leakproof, all day long.
The Hydro Flask 21 Oz Standard Flex Cap Black is a premium stainless steel insulated water bottle designed for professionals on the move. It keeps beverages cold for 24 hours and hot for 12 with TempShield double-wall vacuum insulation. Featuring a leakproof Flex Cap and a cupholder-friendly design, it offers convenience and durability with pure taste retention. Dishwasher safe and backed by a lifetime warranty, this bottle is the ultimate hydration companion for the modern millennial manager.
| 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 |
S**K
Great water bottle for a day out
I have many pieces of Hydro Flask now. They are well made, keep water cold all day, and reasonably priced. I got this one because the opening is large enough for ice cubes and still easy to drink out of without spilling. I have the 21 Oz which fits nicely in my car cup holder. It is sleek looking and the little handle on top is handy.
C**N
Very satisfied
Excellent water bottle. Very sleek and easy to hold. Keeps water cold. No problem with leaking.What I really love is how easy to clean it is. Bottle can easily be flushed with soap / hot water and I haven’t had any problems with the occasional deep clean in dishwasher.
P**R
Great bottle to keep your water cool
Beautiful color with diameter of a plastic water bottle. Its a very high quality bottle that is insulated enough to keep my ice water cold overnight. Have not had any issues with leaks
B**E
Works well..keeps water cold for a fair amount of time
Love this bottle. Perfect size…water stays cold for quite awhile.
L**A
Stays cold
This is my second purchase as my husband wanted one for himself. Great product. Stays cold for a long time. Easy to clean with a bottle brush. Does not leak when it's on its side
S**A
amazing water bottle
this bottle is great! it’s a perfect size. I really like the handle at the top it’s amazing quality. It tightly seals and doesn’t leak. It keeps the water cold but not for long like it does stay cool but not the same temperature.
W**H
Keeps Your Water Cold
Lightweight and easily fits into truck cup holder. Keeps water cold for a long time. Easy to clean too.
S**E
Better than most bottles
As someone who’s always on the go, my Hydro Flask has become an essential part of my daily routine. The insulation is no joke—it keeps my water ice-cold during long training sessions and my coffee piping hot when I’m heading to early morning workouts. What really stands out to me is how durable it is; I’ve dropped it more times than I can count, and it barely has a scratch.The wide mouth design makes it easy to fill with ice or clean after a long day, and the sleek design fits perfectly in my gym bag or car cup holder. I also love how it doesn’t sweat, no matter how cold the contents are, which is a huge plus when you’re carrying it around all day.For athletes, travelers, or anyone who values convenience and performance, the Hydro Flask is worth every penny. It’s not just a water bottle—it’s an investment in staying hydrated and fueled no matter where life takes you
Trustpilot
2 weeks ago
2 weeks ago
