---
product_id: 628985995
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: "VT36158"
currency: VUV
in_stock: true
reviews_count: 5
url: https://www.desertcart.vu/products/628985995-water-bottle-621-ml-21-oz-with-flex-straw-cap
store_origin: VU
region: Vanuatu
---

# 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:** VT36158
**Availability:** ✅ In Stock

## Summary

> 💧 Sip Smart, Live Bold — Stay Hydrated, Stay Ahead!

## 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?** VT36158 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/628985995-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

- • **Eco-Friendly & Safe:** BPA-free, dishwasher safe, and backed by a lifetime warranty—hydrate sustainably and confidently.
- • **Sleek, Backpack-Ready Design:** Compact 21 oz size with a powder-coated finish slides easily into your daily carry.
- • **One-Handed Hydration On-The-Go:** Sip effortlessly with the leakproof flex straw cap designed for busy, active lifestyles.
- • **Durable Pro-Grade Stainless Steel:** 18/8 stainless steel ensures no flavor transfer and rugged durability for every adventure.
- • **TempShield Tech for All-Day Freshness:** Double-wall vacuum insulation locks in your perfect sip temperature—cold or hot, all day long.

## Overview

The Hydro Flask 21 oz water bottle features TempShield double-wall vacuum insulation that keeps beverages cold for 24 hours and hot for 12 hours. Crafted from durable 18/8 pro-grade stainless steel with a leakproof flex straw cap, it offers one-handed hydration on the move. Its sleek, powder-coated design fits comfortably in backpacks and is BPA-free, dishwasher safe, and backed by a limited lifetime warranty—perfect for professionals who demand style, performance, and sustainability.

## Description

We make thoughtful, beautifully designed gear that moves people. Towards nature. Towards happy. And towards each other. Because life is an adventure and we’re glad to be with you for every step, sip and smile along the way. Come on.Let’s Go!Surrounded by mountains, rivers and lakes, HYDRO FLASK HQ is literally nestled into a Pacific Northwest wonderland– Bend, Oregon. Where we are from, is part of who we are and it’s in our DNA. It has shaped our products, people and what we’re about as a company.Not only is the outdoors our everything, but we love to share all kinds of life experiences with others, whether it's a day at the office or at the university or a yoga class. That is our purpose and our heartbeat. Whatever you need to help you be outside living your best life, we're in.The inspiration behind every product we design is Mother Nature. There’s never anything extra – every choice is made for a reason. Keep it strikingly simple. From product innovation to colour leadership - simplicity drives all.More than any design award we've won, we're the most proud of Parks For All – a charitable programme we created to benefit public green spaces and promote happier, healthier lives outdoors for all. To date, we’ve been able to support more than 122 non-profits and donate over £1.3 million and counting!#RefillForGood is our rally cry to encourage people to make the switch and make a real difference for the planet. HYDRO FLASK gear can replace single-use plastics such as plastic water bottles and to-go containers.MAKE EVERY ADVENTURE MORE AWESOME. #HeyLetsGo

Review: Hydro Flask is always a safe buy! - Hydro Flask is always a safe buy! What to say more! Is our 3rd bottle and all just perfect!
Review: Excellent, highly recommend - Excellent, keeps our drinks cold. It feels sturdy and looks great.

## 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 |
| Age Range Description | Adult |
| Base Diameter | 7.3 Centimetres |
| Best Sellers Rank | #2,422,666 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #9,508 in Insulated Bottles |
| Brand | Hydro Flask |
| Cap Type | Straw Cap |
| Capacity | 21 Fluid Ounces |
| Colour | Black |
| Customer Reviews | 4.6 out of 5 stars 588 Reviews |
| Enclosure Material | Plastic |
| Global Trade Identification Number | 00810028842410 |
| Included Components | Lid, Straw |
| 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 Centimeters |
| Item Height | 7.2 Centimeters |
| Item Type Name | Flask |
| Manufacturer | Hydro Flask |
| Model Name | Flex Straw Cap |
| Number of Items | 1 |
| OutputCapacity | 21 Fluid Ounces |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Product Features | Dishwasher Safe, Leakproof |
| Recommended Uses For Product | Water |
| 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) 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

### ⭐⭐⭐⭐⭐ Hydro Flask is always a safe buy!
*by A***G on 11 September 2024*

Hydro Flask is always a safe buy! What to say more! Is our 3rd bottle and all just perfect!

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

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

### ⭐⭐⭐⭐ Toppen
*by H***. on 2 November 2024*

Flaskan isolerar toppenbra och sugröret funkar som utlovat samt är 100% läckagefri. Enda nackdelen, för mig, är att flödet inte är så högt i sugröret. Så är man törstig tar det tid att få i sig tillräcklig mängd vatten. Men tror det är väldigt individuellt vad man föredrar.

## 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.vu/products/628985995-water-bottle-621-ml-21-oz-with-flex-straw-cap](https://www.desertcart.vu/products/628985995-water-bottle-621-ml-21-oz-with-flex-straw-cap)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-11*