---
product_id: 399510048
title: "Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone"
brand: "hydro flask"
price: "€ 138.84"
currency: EUR
in_stock: false
reviews_count: 10
category: "Hydro Flask"
url: https://www.desertcart.sk/products/399510048-hydro-flask-standard-mouth-water-bottle-flex-cap-21-oz
store_origin: SK
region: Slovakia
---

# Keeps drinks hot 6 hrs Fits car cup holders Keeps drinks cold 24 hrs Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone

**Brand:** hydro flask
**Price:** € 138.84
**Availability:** ❌ Out of Stock

## Summary

> ❄️ Stay chill, stay classic — hydration that keeps up with your hustle!

## Quick Answers

- **What is this?** Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone by hydro flask
- **How much does it cost?** € 138.84 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/399510048-hydro-flask-standard-mouth-water-bottle-flex-cap-21-oz)

## 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

- • **On-the-Go Convenience:** Compact 21 oz fits most car cup holders and bike racks—hydration that moves with you.
- • **Sleek Stone Finish with Grip:** Proprietary powder coat ensures a slip-free, stylish carry wherever you go.
- • **Durable & Pure Stainless Steel:** 18/8 food-grade stainless steel keeps flavors fresh and bottle BPA-free.
- • **Perfectly Sized Standard Mouth:** 1.81" opening fits ice cubes and Hydro Flask caps for versatile hydration.
- • **TempShield™ Insulation Mastery:** Double-wall vacuum tech locks in temps—hot for 6 hours, cold for 24.

## Overview

The Hydro Flask Standard Mouth Water Bottle (21 oz, Stone) features TempShield™ double-wall vacuum insulation to keep beverages cold for 24 hours or hot for 6 hours. Crafted from BPA-free 18/8 stainless steel with a slip-resistant powder coat, it fits most car cup holders and bike racks. Its 1.81" opening accommodates ice cubes and compatible caps, making it the perfect stylish companion for active professionals seeking reliable, long-lasting hydration.

## Description

Count on ice in the forecast. Staying hydrated is easy when you’ve got this portable thirst-quenching travel buddy. Whether you’re headed to the gym or a quick jaunt across town, you can easily take your refreshment with you. The 18/8 stainless steel double wall vacuum insulation technology will keep cold liquids chilled for up to 24 hours, while hot liquids remain hot for up to 6. The Standard Mouth opening is large enough to fit most ice cubes, but small enough to sip from on the go. Double wall vacuum insulation keeps your ice cubes intact and your drink icy cold for up to 24 hours. It's large enough to hold water for the day, yet it fits easily into a pack, side pocket or car cup holder. 18/8 stainless steel keeps your favorite beverage fresh and pure, without any leftover flavors or odors. All Hydro Flasks use recyclable materials and are backed by the manufacturer's lifetime warranty. Features: Small enough for convenient transport Standard Mouth Opening TempShield Protected Double Wall Vacuum Insulated Keeps Hot up to 6 Hours, Keeps Cold up to 24 Hours Durable, sweat-free powder coat finish (except for the Stainless option) BPA-Free 18/8 Stainless Steel Lifetime Warranty Compatable Lids: Hydro Flask Sport Cap Parks for All - With Hydro Flask's new giving program, Parks for All, they are focusing on one overarching goal: supporting the development and maintenance of public green spaces everywhere Hand wash only with hot, soapy water. Rinse and dry, and it's ready for adventure

Review: 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.
Review: Good product - Price worth product

## Features

- Standard Mouth 1.81" opening fits the Hydro Flask Sport Cap and Standard Mouth Flex Cap
- With its double-wall vacuum insulated TempShield technology, liquids remain hot up to 6 Hours, and cold up to 24 Hours
- All Hydro Flasks are made of non-toxic BPA-free plastics & 18/8 stainless steel food-grade stainless steel
- Thanks to the proprietary powder coat, your bottle stays slip-free making it easy to go wherever you do
- Fits in most automobile cup holders and bicycle bottle racks

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083GBDTYY |
| Age Range (Description) | Adult |
| Base Diameter | 2.8 Inches |
| Best Sellers Rank | #119,201 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #977 in Insulated Bottles |
| Brand | Hydro Flask |
| Cap Type | Screw Cap |
| Capacity | 21 Fluid Ounces |
| Colour | Stone |
| Department | unisex-adult |
| Generic Name | Water Bottle |
| Global Trade Identification Number | 00810007834818 |
| Importer | 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 Dishwasher Safe | Yes |
| Item Weight | 23.7 g |
| Item model number | S21SX010 |
| Manufacturer | Hydro Flask, Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Material | Stainless Steel |
| Model Name | S21SX010 |
| Net Quantity | 1 Count |
| Number of Items | 1 |
| Number of Packs | 1 |
| Packer | Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Product Dimensions | 29W x 111H Millimeters |
| Recommended Uses For Product | Water |
| Special Feature | TempShield™ insulation, Proprietary Powder Coat |
| UPC | 810007834818 |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 21 Fluid Ounces
- **Colour:** Stone
- **Recommended Uses For Product:** Water
- **Special Feature:** TempShield™ insulation, Proprietary Powder Coat

## Images

![Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone - Image 1](https://m.media-amazon.com/images/I/214JSyW7sIL.jpg)
![Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone - Image 2](https://m.media-amazon.com/images/I/41goL7IomUL.jpg)
![Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone - Image 3](https://m.media-amazon.com/images/I/41j+YgvpwLL.jpg)
![Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone - Image 4](https://m.media-amazon.com/images/I/519oZzeccuL.jpg)
![Hydro Flask Standard Mouth Water Bottle, Flex Cap - 21 oz, Stone - Image 5](https://m.media-amazon.com/images/I/51T6HHSh7AL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent
*by S***N on 25 January 2025*

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.

### ⭐⭐⭐⭐⭐ Good product
*by J***O on 25 January 2025*

Price worth product

### ⭐⭐⭐⭐⭐ Nice
*by N***A on 24 March 2023*

Nice bottle. First time I got a new bottle from Amazon otherwise all the time I got the used one which I returned of course. So, because it is new, I Keeping it.

## Frequently Bought Together

- Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall Vacuum Insulation
- Hydro Flask Flex Boot - Accessory Silicone Water Bottle Protector - Dishwasher Safe, BPA-Free, Non-Toxic
- Hydro Flask Standard Mouth Lids- Accessory for Standard Mouth Water Bottle

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**Shop now:** [https://www.desertcart.sk/products/399510048-hydro-flask-standard-mouth-water-bottle-flex-cap-21-oz](https://www.desertcart.sk/products/399510048-hydro-flask-standard-mouth-water-bottle-flex-cap-21-oz)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-06*