






💧 Stay cool, stay sharp—hydrate like a boss.
The Hydro Flask Standard Mouth Water Bottle (21 oz, Black) features double-wall vacuum TempShield insulation that keeps drinks cold for 24 hours and hot for 6 hours. Crafted from BPA-free, food-grade 18/8 stainless steel with a slip-resistant powder coat, it fits most car cup holders and bike racks. Designed for professionals on the move, it offers a versatile standard mouth opening compatible with multiple caps and ice cubes, backed by a lifetime warranty for lasting performance.














| ASIN | B01KXHIWL8 |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Base Diameter | 7.1 Centimetres |
| Best Sellers Rank | #241,646 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #4,631 in Water Bottles |
| Brand | Hydro Flask |
| Cap Type | Screw Cap |
| Capacity | 21 Fluid Ounces |
| Colour | Black |
| Country of Origin | USA |
| Customer Reviews | 4.8 out of 5 stars 54,211 Reviews |
| Enclosure Material | Stainless Steel |
| Global Trade Identification Number | 00810497025680 |
| Importer Contact Information | Creative Peripherals and Distribution Limited 3rd & 4th Floor, Plot No. 137AB, Kandivali Co Op Industrial Estate Limited, Charkop, Kandivali West, Mumbai – 400 067 |
| Included Components | Lid |
| Is Oven Safe | No |
| Is the item dishwasher safe? | Yes |
| Is the item microwaveable? | No |
| Item Height | 11.1 Inches |
| Item Type Name | Water Bottle |
| Item Weight | 24 g |
| Manufacturer | Hydro Flask, Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Manufacturer Contact Information | Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Manufacturer Warranty Description | 1 Year manufacturer Warranty from the date of purchase |
| Model Name | S21SX001 |
| Number of Items | 1 |
| OutputCapacity | 21 Fluid Ounces |
| Packer Contact Information | Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Product Features | portable |
| Recommended Uses For Product | Water |
| Special Feature | portable |
| Theme | Food & Beverage |
| UPC | 810497025680 |
| Unit Count | 1 Count |
| With Lid | Yes |
S**N
Excellent
It’s pricey, but does an excellent job keeping the fluids hot for an entire day. Didn’t try cold, but should be the same. Always rinse with same temp water first. Looks classic too. Only peeve is the handle to hold is not ergonomic especially if you want to take along for walks. It’s best used at a desk.
J**O
Good product
Price worth product
C**A
best but just 621ml
its awesome and handy.. loved it and looks leak proof... planning to buy onemorr but black one... i love black
P**R
Good, but not one of the best
An average product, Flask does not sustain heat for a long time, making it unsuitable for keeping drinks hot or cold for extended periods of time.