---
product_id: 650457731
title: "Hydro Flask 21 oz Standard Mouth Flex Cap Alpine"
brand: "hydro flask"
price: "HK$68"
currency: HKD
in_stock: false
reviews_count: 8
url: https://www.desertcart.hk/products/650457731-hydro-flask-21-oz-standard-mouth-flex-cap-alpine
store_origin: HK
region: Hong Kong
---

# Leakproof Hot 12 hrs Cold 24 hrs Hydro Flask 21 oz Standard Mouth Flex Cap Alpine

**Brand:** hydro flask
**Price:** HK$68
**Availability:** ❌ Out of Stock

## Summary

> 💧 Sip, Savor, and Show Off Your Style!

## Quick Answers

- **What is this?** Hydro Flask 21 oz Standard Mouth Flex Cap Alpine by hydro flask
- **How much does it cost?** HK$68 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/650457731-hydro-flask-21-oz-standard-mouth-flex-cap-alpine)

## 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

- • **Adventure-Ready:** Fits most backcountry water filters and is cup holder compatible for on-the-go convenience.
- • **Eco-Friendly Choice:** BPA-free and toxin-free, because your health and the planet matter.
- • **Insulation Innovation:** TempShield technology keeps your drinks at the perfect temperature for hours.
- • **Durability Meets Design:** Crafted from 18/8 pro-grade stainless steel for a pure taste and no flavor transfer.
- • **Stay Hydrated, Stay Stylish:** Elevate your hydration game with a sleek design that fits your lifestyle.

## Overview

The Hydro Flask 21 oz Standard Mouth Flex Cap Alpine is a premium stainless steel water bottle designed for durability and performance. With TempShield insulation, it keeps beverages cold for up to 24 hours and hot for up to 12 hours. The leakproof Flex Cap and comfortable Flex Strap make it perfect for any adventure, while the dishwasher-safe Color Last powder coat ensures it stays vibrant and slip-free. Ideal for eco-conscious individuals, this bottle is BPA-free and toxin-free, making it a smart choice for hydration on the go.

## Description

Full description not available

## Features

- Stainless steel
- Imported
- 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
- Color Last powder coat is dishwasher safe, keeping your bottle slip-free and colorful
- Fits most backcountry water filters
- Cup holder compatible
- BPA-Free & Toxin-Free

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Hydro Flask |
| Capacity | 21 Fluid Ounces |
| Color | Alpine |
| Recommended Uses For Product | Water |
| Special Feature | Insulated,Cold 24 Hours,Hot 12 Hours,Durable,Leakproof,Dishwasher Safe,Non-Slip,Double Wall |
| Age Range (Description) | Adult |
| Product Dimensions | 1.12"W x 4.37"H |
| Model Name | 21 OZ STANDARD FLEX CAP |
| Item Weight | 11.3 Ounces |
| Theme | Car |
| Material | STEEL |
| Number of Items | 1 |
| Pattern | Bottle |
| Included Components | bottle, lid |
| Product Care Instructions | Dishwasher safe |
| Cap Type | Flex cap, sport cap |
| With Lid | Yes |
| UPC | 810028842380 |
| Manufacturer | Hydro Flask |
| Part Number | S21SX433 |
| Item Weight | 11.3 ounces |
| Item model number | S21SX433 |
| Size | 21 Ounces |
| Style | 21 Oz |
| Item Package Quantity | 1 |
| Special Features | Insulated,Cold 24 Hours,Hot 12 Hours,Durable,Leakproof,Dishwasher Safe,Non-Slip,Double Wall |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | LIFETIME |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 21 Fluid Ounces
- **Color:** Alpine
- **Recommended Uses For Product:** Water
- **Special Feature:** Insulated,Cold 24 Hours,Hot 12 Hours,Durable,Leakproof,Dishwasher Safe,Non-Slip,Double Wall

## Images

![Hydro Flask 21 oz Standard Mouth Flex Cap Alpine - Image 1](https://m.media-amazon.com/images/I/51+xwqX4Y3L.jpg)
![Hydro Flask 21 oz Standard Mouth Flex Cap Alpine - Image 2](https://m.media-amazon.com/images/I/81y1osT5DuL.jpg)
![Hydro Flask 21 oz Standard Mouth Flex Cap Alpine - Image 3](https://m.media-amazon.com/images/I/71MqNsDGjUL.jpg)
![Hydro Flask 21 oz Standard Mouth Flex Cap Alpine - Image 4](https://m.media-amazon.com/images/I/71xxm4IxcvS.jpg)
![Hydro Flask 21 oz Standard Mouth Flex Cap Alpine - Image 5](https://m.media-amazon.com/images/I/71VZg0Snf3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing product
*by H***Y on September 28, 2023*

The media could not be loaded. I love the color of it! It is soft on the touch of the water bottle, it keeps it cold and or hot. The only thing I disliked was the height it was a little smaller than expected, but then again I could’ve order a different size. Overall it was an amazing water bottle with a great color and works great, definitely a 9/10 :)

### ⭐⭐⭐⭐⭐ Love my new water bottle!
*by Y***A on March 28, 2022*

Was first attracted to my new Hydro Flask water bottle by the reviews. Have pure water at home, but nothing to carry it in. So, now have a beautiful water bottle to take to my yoga class, and for regular errand running. Do not know why I waited so long to make this purchase. Does not leak and keeps the temperature just right.

### ⭐⭐⭐⭐⭐ Heck yeah
*by C***D on October 25, 2023*

I AM OBSESSED with this bottle!! We got 2 different ones & love them both!! Keeps ice for a couple of days too!

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**Shop now:** [https://www.desertcart.hk/products/650457731-hydro-flask-21-oz-standard-mouth-flex-cap-alpine](https://www.desertcart.hk/products/650457731-hydro-flask-21-oz-standard-mouth-flex-cap-alpine)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-04*