---
product_id: 487202592
title: "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"
brand: "hydro flask"
price: "1632726₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Hydro Flask"
url: https://www.desertcart.vn/products/487202592-water-bottle-621-ml-21-oz-with-flex-straw-cap
store_origin: VN
region: Vietnam
---

# Leakproof flex straw cap Keeps drinks hot up to 12h Keeps drinks cold up to 24h 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

**Brand:** hydro flask
**Price:** 1632726₫
**Availability:** ✅ In Stock

## Summary

> 💼 Stay sharp, sip smarter—hydrate like a boss with Hydro Flask.

## Quick Answers

- **What is this?** 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 by hydro flask
- **How much does it cost?** 1632726₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/487202592-water-bottle-621-ml-21-oz-with-flex-straw-cap)

## 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

- • **Sleek, Backpack-Ready Design:** Compact 621 ml size with a powder-coated finish slides effortlessly into your daily carry.
- • **Safe, Sustainable & Easy-Clean:** BPA-free, toxin-free, and dishwasher safe—because your health and convenience matter.
- • **Durable Pro-Grade Stainless Steel:** 18/8 stainless steel ensures zero flavor transfer and a bottle that’s built to last through every grind.
- • **TempShield Tech for All-Day Freshness:** Double-wall vacuum insulation locks in your drink’s perfect temp—cold or hot—wherever you hustle.
- • **Sip On-The-Go with Leakproof Flex Straw:** One-handed hydration meets spill-proof design, so you never miss a beat or a sip.

## Overview

The Hydro Flask 621 ml water bottle features TempShield vacuum insulation that keeps beverages cold for 24 hours and hot for 12 hours. Crafted from durable 18/8 stainless steel with a leakproof flex straw cap, it offers one-handed hydration on the move. Its sleek, powder-coated design fits easily in backpacks and car holders, while being BPA-free and dishwasher safe for health-conscious professionals. Backed by a limited lifetime warranty, it’s the ultimate hydration companion for busy millennials.

## Description

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

Review: Great bottle - I love this bottle—great size, fits in car cup holder, easy to clean, and it keeps drinks at the perfect temperature.
Review: Keeps drink cold for hours. - Love the color and the size. Fits in car holder.

## Features

- One-handed hydration: the double-wall vacuum insulated technology keeps your drink at the perfect temperature no matter where your day takes you. Enjoy a leakproof flex straw cap to sip your drink at optimal temperature, while being on the move. This water bottle is just the right size for staying hydrated before, during and after activity
- Benefit from a perfect drinking temperature for hours: our TempShield vacuum insulated technology, combined with our Honeycomb insulated cap, guards the temperature of your drink and eliminates condensation. It keeps beverages cold for up to 24 hours and hot for up to 12 hours. So relax and enjoy your drink wherever you go
- Practical shape and sustainable construction built to last: this water bottle is made out of 18/8 pro-grade stainless steel to ensure durability, pure taste and no flavour transfer. Its colour last powder coat and cylindrical shape make it nice to hold, easy to slide in and out of a backpack and comfortable to carry
- Leakproof, BPA-Free and dishwasher safe: transport your water bottle without any worry, thanks to our leakproof flex straw cap (when closed) and practical carry strap. For your safety and comfort, this bottle is BPA-Free, Toxin-Free and dishwasher safe. Our 710 ml standard mouth bottle will keep you well-hydrated throughout the day
- 100% Customer and product satisfaction warranty: We stand behind our products and have great faith in our products. HYDRO FLASK is committed to high standards of durable and robust materials. HYDRO FLASK guarantees this product with a limited lifetime warranty against manufacturer defects

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SBS12KG |
| Age Range (Description) | Adult |
| Base Diameter | 7.3 Centimeters |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #67,295 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #608 in Insulated Bottles |
| Brand | Hydro Flask |
| Cap Type | Straw Cap |
| Capacity | 21 Fluid Ounces |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (305) |
| Date First Available | February 11, 2022 |
| Global Trade Identification Number | 00810028842410 |
| Included Components | 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 |
| Is Dishwasher Safe | Yes |
| Item Package Quantity | 1 |
| Item Weight | 14.4 ounces |
| Item model number | S21FS001 |
| Manufacturer | Hydro Flask |
| Material | Plastic |
| Model Name | 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 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | S21FS001 |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Product Dimensions | 2.83"W x 2.83"H |
| Recommended Uses For Product | Water |
| Size | 21 Ounces |
| Special Feature | Dishwasher Safe, Leakproof |
| Special Features | Dishwasher Safe, Leakproof |
| Style | Straw Cap |
| UPC | 810028842410 |
| Warranty Description | Warranty |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 21 Fluid Ounces
- **Color:** Black
- **Recommended Uses For Product:** Water
- **Special Feature:** Dishwasher Safe, Leakproof

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/41qbO5gntPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great bottle
*by L***I on December 26, 2025*

I love this bottle—great size, fits in car cup holder, easy to clean, and it keeps drinks at the perfect temperature.

### ⭐⭐⭐⭐⭐ Keeps drink cold for hours.
*by K***H on December 3, 2025*

Love the color and the size. Fits in car holder.

### ⭐⭐⭐⭐⭐ My fav water bottle brand
*by M***Y on August 2, 2024*

I own quite a lot of hydro flask bottles (you can never have enough.. or can you?) and they are by far my favorite water bottles to buy. They are sturdy. As you can see from the picture this water bottle went through some damages but it’s still holding up strong! I like how they offer may sizes as well and cleaning is a breeze. The bottle is insulated so cold water will stay cold for a long time and hot water will stay hot for a long while as well. You can clean it with a brush that fits the opening but i typically put it in the dish washer. Just a FYI to not fill it all the way up. It seems that if you fill up too high around where it bottle necks it tends to leak a little. Overall though I still love their products.

## 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.vn/products/487202592-water-bottle-621-ml-21-oz-with-flex-straw-cap](https://www.desertcart.vn/products/487202592-water-bottle-621-ml-21-oz-with-flex-straw-cap)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-22*