---
product_id: 462385575
title: "Standard Mouth with Flex Cap - Insulated Water Bottle, 21 Oz"
brand: "hydro flask"
price: "€ 53.84"
currency: EUR
in_stock: true
reviews_count: 7
category: "Hydro Flask"
url: https://www.desertcart.ie/products/462385575-standard-mouth-with-flex-cap-insulated-water-bottle-21-oz
store_origin: IE
region: Ireland
---

# Leakproof Flex Cap Keeps drinks hot up to 12h Keeps drinks cold up to 24h Standard Mouth with Flex Cap - Insulated Water Bottle, 21 Oz

**Brand:** hydro flask
**Price:** € 53.84
**Availability:** ✅ In Stock

## Summary

> 💧 Stay cool, stay hot, stay ahead with Hydro Flask.

## Quick Answers

- **What is this?** Standard Mouth with Flex Cap - Insulated Water Bottle, 21 Oz by hydro flask
- **How much does it cost?** € 53.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/462385575-standard-mouth-with-flex-cap-insulated-water-bottle-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

- • **Leakproof Confidence:** Flex Cap seals tight to prevent spills, making it your perfect on-the-go hydration partner.
- • **Pro-Grade Durability:** Crafted from 18/8 stainless steel for a pure taste experience with zero flavor transfer—built to last through every hustle.
- • **Effortless Portability:** Comfortable Flex Strap lets you carry your bottle hands-free, blending convenience with style.
- • **Honeycomb Insulated Cap:** Innovative design maximizes temperature retention, keeping your beverage fresh longer than ever.
- • **All-Day Temperature Control:** TempShield insulation locks in cold for 24 hours and heat for 12 hours, so your drink is always just right.

## Overview

The Hydro Flask Standard Mouth 21 Oz insulated water bottle features TempShield technology that keeps beverages cold for 24 hours and hot for 12 hours. Made from durable 18/8 pro-grade stainless steel, it ensures no flavor transfer. The leakproof Flex Cap and comfortable Flex Strap make it ideal for active professionals seeking reliable, stylish hydration on the move.

## Description

Buy Hydro Flask Standard Mouth with Flex Cap - Insulated Water Bottle, 21 Oz online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Luv it !! - Keeps the water cold for hours
Review: Excellent - I bought this item for when I play golf and it's perfect. Keeps cold drinks cold. Haven't used it for hot items. I did hqve to buy a protector for the base separately shame it didn't come eith 1 but worth the buy

## Features

- TempShield insulation keeps beverages cold up to 24 hours and hot up to 12 hours
- Made with 18/8 pro-grade stainless steel to ensure durability, pure taste and no flavor transfer
- Flex Cap is leakproof when closed, to transport without worry
- Flex Strap is easy to transport and comfortable to carry
- Honeycomb Insulated cap for maximum temperature retention

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SQP23MC |
| Additional Features | Leakproof |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Base Diameter | 2.8 Inches |
| Best Sellers Rank | #7,072 in Sporting Goods ( See Top 100 in Sporting Goods ) #358 in Sports Water Bottles |
| Brand | Hydro Flask |
| Brand Name | Hydro Flask |
| Cap Type | Flex Cap |
| Capacity | 21 Fluid Ounces |
| Color | Black |
| Colour | Black |
| Country of Publication | China |
| Customer Reviews | 4.8 out of 5 stars 19,892 Reviews |
| Global Trade Identification Number | 00810070083922 |
| Included Components | Water Bottle |
| Is Oven Safe | No |
| Is the item dishwasher safe? | No |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 7.1W x 23.9H centimeters |
| Item Type Name | Water Bottle |
| Item Weight | 340 g |
| Item height | 26.16 centimeters |
| Manufacturer | Hydro Flask |
| Material Type | Stainless Steel |
| Model Name | THERMOS |
| Number of Items | 1 |
| Pattern | Indigo |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Water |
| Recommended uses for product | Water |
| Special features | Leakproof |
| Theme | Solid |
| UPC | 810070083922 |
| Unit Count | 1 Count |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 21 Fluid Ounces
- **Colour:** Black
- **Recommended uses for product:** Water
- **Special features:** Leakproof

## Images

![Standard Mouth with Flex Cap - Insulated Water Bottle, 21 Oz - Image 1](https://m.media-amazon.com/images/I/61YV+seZLJL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Luv it !!
*by J***N on 13 June 2025*

Keeps the water cold for hours

### ⭐⭐⭐⭐⭐ Excellent
*by M***N on 8 December 2023*

I bought this item for when I play golf and it's perfect. Keeps cold drinks cold. Haven't used it for hot items. I did hqve to buy a protector for the base separately shame it didn't come eith 1 but worth the buy

### ⭐⭐⭐⭐⭐ Excellent
*by B***R on 29 September 2024*

Good quality

## 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.ie/products/462385575-standard-mouth-with-flex-cap-insulated-water-bottle-21-oz](https://www.desertcart.ie/products/462385575-standard-mouth-with-flex-cap-insulated-water-bottle-21-oz)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-20*