---
product_id: 71953242
title: "Standard Mouth Water Bottle, Flex Cap - 21 oz, Black"
brand: "hydro flask"
price: "23536 som"
currency: KGS
in_stock: true
reviews_count: 9
category: "Hydro Flask"
url: https://www.desertcart.kg/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black
store_origin: KG
region: Kyrgyzstan
---

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

**Brand:** hydro flask
**Price:** 23536 som
**Availability:** ✅ In Stock

## Summary

> 💧 Stay refreshed, stay unstoppable — hydration that keeps up with you!

## Quick Answers

- **What is this?** Standard Mouth Water Bottle, Flex Cap - 21 oz, Black by hydro flask
- **How much does it cost?** 23536 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black)

## 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

- • **Compact & Travel-Ready:** Fits bike racks, backpacks, and your daily hustle
- • **Standard Mouth Flex Cap:** Sip or ice cubes? You decide with the ideal 1.81" opening
- • **Durable Powder Coat Finish:** Slip-free grip for your on-the-go lifestyle
- • **TempShield Vacuum Insulation:** Lock in your drink’s perfect temp all day long
- • **BPA-Free 18/8 Stainless Steel:** Pure taste, zero toxins, lifetime confidence

## Overview

The Hydro Flask Standard Mouth Water Bottle (21 oz) features double-wall TempShield vacuum insulation that keeps beverages cold for up to 24 hours and hot for up to 6 hours. Crafted from BPA-free 18/8 food-grade stainless steel with a slip-resistant powder coat, it fits most car cup holders and bike racks. Designed for active professionals, it offers a versatile standard mouth opening compatible with multiple caps and is backed by a lifetime warranty.

## 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 | B01KXHIWL8 |
| Age Range (Description) | Adult |
| Base Diameter | 7.1 Centimetres |
| Best Sellers Rank | #357,269 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #6,067 in Water Bottles |
| Brand | Hydro Flask |
| Cap Type | Screw Cap |
| Capacity | 21 Fluid Ounces |
| Colour | Black |
| Country of Origin | USA |
| Department | Girls |
| Generic Name | Water Bottle |
| Global Trade Identification Number | 00810497025680 |
| 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 Dimensions LxWxH | 7.2 x 7.2 x 28.2 Centimeters |
| Item Weight | 23.7 g |
| Item model number | SYNCHKG099288 |
| Manufacturer | Hydro Flask, Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Material | Stainless Steel |
| Model Name | S21SX001 |
| Net Quantity | 1 Count |
| Number of Items | 1 |
| Packer | Hydro Flask 525 NW York Dr Bend, OR Sportswear |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Product Dimensions | 7.24 x 7.24 x 28.19 cm; 23.68 g |
| Recommended Uses For Product | Water |
| Special Feature | portable |
| UPC | 810497025680 |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 21 Fluid Ounces
- **Colour:** Black
- **Recommended Uses For Product:** Water
- **Special Feature:** portable

## Images

![Standard Mouth Water Bottle, Flex Cap - 21 oz, Black - Image 1](https://m.media-amazon.com/images/I/61zTQE7uD5L.jpg)

## Available Options

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

## Questions & Answers

**Q: Re Hydro Flask 24", what does "flex lid" mean?**
A: no, you can't. if you watch the video it shows that you have to remove the lid to drink. i think the "flex" is in fact that the handle folds down, instead of being "fixed".  you can get a lid that has a pop-up straw.

**Q: Ok so does it come with little stickers?**
A: Hi - Wendy here from Tall Ridge, the exclusive authorized seller of Hydro Flask products on Amazon - Thank you for your inquiry! Our Hydro Flask products do not come with stickers. I hope that answers your question.

**Q: Curious... is the bottle supposed to be perfectly round all the way up and down?  i just received mine from amazon and it is not.  it feels oblong.**
A: Yes, it should be perfectly cylindrical (round) all the way up. If it's not, there is an issue, and I would think that the company would take care of it. To tell if it's in fact round, remove the cap, make sure it's empty, place it on its side on a flat surface, and roll it.

**Q: I just bought this hydroflask in the color olive. Is it normal for the lid to have to be forced to close all the way? It doesnt close easily**
A: How did this work out for you? I'm experiencing same problem? I know it's not normal as I have been using this brand for a couple years now. Did u keep and use?

## 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

### ⭐⭐⭐⭐⭐ best but just 621ml
*by C***A on 10 May 2023*

its awesome and handy.. loved it and looks leak proof... planning to buy onemorr but black one... i love black

## Frequently Bought Together

- Hydro Flask Standard Flex Cap Black 21 Oz
- 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.kg/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black](https://www.desertcart.kg/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-12*