---
product_id: 667394343
title: "Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow"
brand: "hydro flask"
price: "£65.27"
currency: GBP
in_stock: true
category: "Hydro Flask"
url: https://www.desertcart.co.uk/products/667394343-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow
store_origin: GB
region: United Kingdom
---

# Leakproof seal 12h hot retention 24h cold retention Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow

**Brand:** hydro flask
**Price:** £65.27
**Availability:** ✅ In Stock

## Summary

> 💧Hydrate like a pro, stay fresh all day long!

## Quick Answers

- **What is this?** Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow by hydro flask
- **How much does it cost?** £65.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/667394343-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow)

## 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

- • **Perfectly Portable:** 21 oz size fits cupholders and backpacks seamlessly—hydration that moves with you.
- • **Leakproof Confidence:** Secure flex cap ensures no spills or leaks, perfect for your daily commute or gym bag.
- • **Zero Flavor Transfer:** Enjoy pure, untainted taste every sip—no metallic or residual flavors.
- • **Adventure-Ready Durability:** Crafted from tough stainless steel that withstands your busiest days and wildest hikes.
- • **Stay Chill or Sizzle All Day:** Keeps beverages icy cold for 24 hours or piping hot for 12 hours with TempShield️ double-wall vacuum insulation.

## Overview

The Hydro Flask 21 Oz Standard Mouth Flex Cap in Moonshadow Purple features TempShield️ double-wall vacuum insulation that keeps drinks cold for 24 hours and hot for 12 hours. Made from durable stainless steel, it offers leakproof performance and pure taste with no flavor transfer. Its 21 oz capacity and cupholder-compatible design make it the ideal hydration companion for busy professionals and outdoor enthusiasts alike.

## Description

Stainless steel, cupholder compatible, fits right in your pack—the reusable, refillable 21 oz Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for hours of fun.

## Features

- 24 hours cold, 12 hours hot
- TempShield️ double-wall vacuum insulation
- Leakproof when closed
- Pure taste, no flavor transfer
- Durable stainless steel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D3VKX2JP |
| Additional Features | Vacuum Insulated |
| Age Range Description | Adult |
| Best Sellers Rank | #36,061 in Sporting Goods ( See Top 100 in Sporting Goods ) #1,544 in Sports Water Bottles |
| Brand Name | Hydro Flask |
| Cap Type | Flex Cap |
| Capacity | 1 Fluid Ounces |
| Color | Moonshadow Purple |
| Customer Reviews | 4.7 4.7 out of 5 stars (241) |
| Global Trade Identification Number | 00840394203737 |
| Included Components | Bottle |
| Is Oven Safe | No |
| Is the item dishwasher safe? | No |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 15W x 25H centimeters |
| Item Type Name | Water Bottle |
| Item Weight | 0.34 Kilograms |
| Manufacturer | Hydro Flask |
| Material Type | Stainless Steel |
| Model Name | Standard Mouth Flex Cap Bottle |
| Number of Items | 1 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Water |
| Theme | Sport |
| UPC | 840394203737 |
| Unit Count | 1 Count |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 1 Fluid Ounces
- **Colour:** Moonshadow Purple
- **Recommended uses for product:** Water
- **Special features:** Vacuum Insulated

## Images

![Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow - Image 1](https://m.media-amazon.com/images/I/61eFEyzPSHL.jpg)
![Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow - Image 2](https://m.media-amazon.com/images/I/810qEfcP6iL.jpg)

## Available Options

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

## Frequently Bought Together

- Hydro Flask - Water Bottle 621 ml (21 oz) - Vacuum Insulated Stainless Steel Water Bottle with Straw Cap - BPA-Free - Standard Mouth - Moonshadow, Fossil
- Hydro Flask - Flex Straw Cap for Standard Mouth - Leakproof - Honeycomb Insulated Cap with Flex Strap for Easy Carrying - BPA-Free and Toxin-Free - Dishwasher Safe - Black

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**Shop now:** [https://www.desertcart.co.uk/products/667394343-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow](https://www.desertcart.co.uk/products/667394343-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-10*