---
product_id: 478729013
title: "Water Bottle 621 ml (21 oz) - Vacuum Insulated Stainless Steel Water Bottle with Flex Straw Cap - Standard Mouth - Black"
brand: "hydro flask"
price: "₨1759"
currency: SCR
in_stock: true
reviews_count: 8
category: "Hydro Flask"
url: https://www.desertcart.sc/products/478729013-water-bottle-621-ml-21-oz-vacuum-insulated-stainless-steel
store_origin: SC
region: Seychelles
---

# Leak-proof Flex Straw Lid Keeps drinks hot 12h Keeps drinks cold 24h Water Bottle 621 ml (21 oz) - Vacuum Insulated Stainless Steel Water Bottle with Flex Straw Cap - Standard Mouth - Black

**Brand:** hydro flask
**Price:** ₨1759
**Availability:** ✅ In Stock

## Summary

> 💦 Stay cool, stay hot, stay unstoppable with Hydro Flask.

## Quick Answers

- **What is this?** Water Bottle 621 ml (21 oz) - Vacuum Insulated Stainless Steel Water Bottle with Flex Straw Cap - Standard Mouth - Black by hydro flask
- **How much does it cost?** ₨1759 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/478729013-water-bottle-621-ml-21-oz-vacuum-insulated-stainless-steel)

## Best For

- hydro flask enthusiasts

## Why This Product

- Trusted hydro flask brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Premium stainless steel construction resists dents and keeps flavors pure, built for your active lifestyle.
- • **Effortless Cleaning:** Dishwasher safe with durable powder coating means less time cleaning, more time living.
- • **Lifetime Confidence:** Backed by Hydro Flask’s lifetime warranty—because quality like this is forever.
- • **One-Handed Hydration:** Innovative leak-proof Flex Straw Cap lets you sip effortlessly on the go—no spills, no hassle.
- • **Ultimate Temperature Control:** Double-wall vacuum insulation locks in cold for 24 hours and hot for 12 hours, so your drink is always perfect.

## Overview

The Hydro Flask 621 ml water bottle features double-wall vacuum insulation that keeps beverages cold for up to 24 hours and hot for up to 12 hours. Its leak-proof Flex Straw Cap enables easy one-handed drinking, while the durable stainless steel body resists damage and preserves taste. Dishwasher safe with a powder-coated finish, it’s designed for active professionals who demand convenience and reliability, all backed by a lifetime warranty.

## Description

From the manufacturer

Review: Excellent, highly recommend - Excellent, keeps our drinks cold. It feels sturdy and looks great.
Review: The best water bottle brand! - This is the second Hydro Flask bottle I’ve purchased (also have a larger capacity one). They are incredibly high quality bottles. The water stays cold for the time suggested (24 hours) and is completely leak proof, even when rolling around in a bag. It is definitely worth the money!

## Features

- IDEAL DRINKING TEMPERATURE: Our double-wall vacuum-insulated bottle keeps beverages cold for up to 24 hours and hot for up to 12 hours. The TempShield technology prevents condensation and heat transfer to the outside.
- BETTER DRINKING ON THE GO: With double-wall, vacuum-insulated technology, our water bottle maintains the IDEAL temperature. The leak-proof Flex Straw Lid allows for easy drinking with just one hand.
- DURABLE WATER BOTTLE: Our eco-friendly, sturdy stainless steel bottle is perfect for any type of sport. The durable construction withstands everything life throws at it, while keeping the taste of your drink intact.
- DISHWASHER SAFE: Our water bottles come with a powder coating that makes cleaning a breeze. Enjoy more leisure time and less work with this convenient feature.
- SATISFACTION GUARANTEED: We offer a lif etime warranty against manufacturer defects. HYDRO FLASK stands behind our durable and robust materials and is committed to high standards.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SBS12KG |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Base Diameter | 7.3 Centimetres |
| Best Sellers Rank | 8,461 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 54 in Insulated Bottles |
| Brand | Hydro Flask |
| Brand Name | Hydro Flask |
| Cap Type | Straw Cap |
| Capacity | 21 Fluid Ounces |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.8 out of 5 stars 605 Reviews |
| Global Trade Identification Number | 00810028842410 |
| Included Components | Straw, water bottle |
| Is Oven Safe | No |
| Is the item dishwasher safe? | Yes |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 7.2W x 7.2H centimetres |
| Item Type Name | Flask |
| Item Weight | 0.32 Kilograms |
| Item height | 7.2 centimetres |
| Manufacturer | Hydro Flask |
| Manufacturer Warranty Description | Hydro flask lifetime warranty. |
| Material Type | Stainless Steel |
| Model Name | Flex-strohkappe |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Recommended Uses For Product | Water |
| Recommended uses for product | Water |
| Special Features | Dishwasher Safe, Leakproof |
| Special feature | Dishwasher Safe, Leakproof |
| Theme | Sport |
| UPC | 810028842410 |
| Unit Count | 1.0 count |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 21 Fluid Ounces
- **Colour:** Black
- **Recommended uses for product:** Water
- **Special feature:** Dishwasher Safe, Leakproof

## Images

![Water Bottle 621 ml (21 oz) - Vacuum Insulated Stainless Steel Water Bottle with Flex Straw Cap - Standard Mouth - Black - Image 1](https://m.media-amazon.com/images/I/612CCh1P50L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Am I able to buy any of the bottles that already have the flex straw lid on them or do I have to buy that lid separately?**
A: You are able to buy bottles that already come with a flex Straw cap, but for the availability of those units, you need to check with a dealer directly. Your Hydro Flask team.

**Q: Why does it state flex cap as being ‘girls’?**
A: No idea.
This came with a twist cap and it is fine. I use sports bottles with different caps for when in the gym etc. The hydroflask is a really solid design.

**Q: What diameter is the base**
A: Hello,

The diameter of both the 18 Ounce and 21 ounce Standard mouth bottle is 2.87 Inches or 7.29 centimetres.

**Q: Hi how do I know if it is legitimate?**
A: it is legit, it's a great flask

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent, highly recommend
*by M***O on 30 November 2025*

Excellent, keeps our drinks cold. It feels sturdy and looks great.

### ⭐⭐⭐⭐⭐ The best water bottle brand!
*by D***T on 10 October 2025*

This is the second Hydro Flask bottle I’ve purchased (also have a larger capacity one). They are incredibly high quality bottles. The water stays cold for the time suggested (24 hours) and is completely leak proof, even when rolling around in a bag. It is definitely worth the money!

### ⭐⭐⭐⭐⭐ The best bottles for all ages
*by A***A on 7 January 2026*

The best bottles ever. Easy to clean and they keep water cold or warm. Love them.

## Frequently Bought Together

- HYDRO FLASK - Water Bottle 621 ml (21 oz) with Flex Straw Cap - Vacuum Insulated Stainless Steel Reusable Water Bottle - Leakproof Lid - Hot and Cold Drinks - Standard Mouth - BPA-Free - Black
- Hydro Flask Flex Boot - Accessory Silicone Water Bottle Protector - Dishwasher Safe, BPA-Free, Non-Toxic Small
- Hydro Flask Standard Mouth Lids- Accessory for Standard Mouth Water Bottle

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**Shop now:** [https://www.desertcart.sc/products/478729013-water-bottle-621-ml-21-oz-vacuum-insulated-stainless-steel](https://www.desertcart.sc/products/478729013-water-bottle-621-ml-21-oz-vacuum-insulated-stainless-steel)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-20*