Quick Summary
The Hydro Flask Water Bottle is a 621 ml (21 oz) stainless steel bottle in Indigo with a standard mouth and a leak proof Flex Cap. It is vacuum insulated and finished with a powder coat.
The bottle is described as suitable for keeping drinks hot or cold, and the standard mouth shape is intended for straightforward filling and cleaning.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Hydro Flask, so the product is identified within that range. |
| Capacity | 621 ml (21 oz), which is the key size check before choosing an offer. |
| Product type | Water bottle with vacuum insulation for everyday drink use. |
| Mouth type | Standard mouth, which affects filling, cleaning and accessory choice. |
| Colour | Indigo. |
| Cap | Leak proof Flex Cap. |
| Finish | Powder coat. |
What to Compare Before Buying
- Capacity: This bottle is 621 ml (21 oz). Compare that with how much drink you want to carry.
- Mouth style: The standard mouth format affects how easily the bottle fills, cleans and works with accessories.
- Cap type: The Flex Cap is part of the product, so check that this is the version you want.
- Finish: The powder coat is part of the specification and may matter if you prefer a particular surface feel or look.
Before You Decide
Confirm the 621 ml (21 oz) capacity, standard mouth format and Indigo colour before choosing an offer. If the cap style matters to you, make sure it is the leak proof Flex Cap version.






