--- product_id: 71953242 title: "Standard Mouth Water Bottle, Flex Cap - 21 oz, Black" brand: "hydro flask" price: "AR$269300" currency: ARS in_stock: true reviews_count: 9 category: "Hydro Flask" url: https://www.desertcart.com.ar/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black store_origin: AR region: Argentina --- # Keeps hot up to 6h Keeps cold up to 24h Fits bike racks & car holders Standard Mouth Water Bottle, Flex Cap - 21 oz, Black **Brand:** hydro flask **Price:** AR$269300 **Availability:** ✅ In Stock ## Summary > 💼 Stay sharp, hydrated, and ahead of the pack with Hydro Flask’s sleek 21 oz powerhouse! ## Quick Answers - **What is this?** Standard Mouth Water Bottle, Flex Cap - 21 oz, Black by hydro flask - **How much does it cost?** AR$269300 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/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 - • **Sip & Go Convenience:** Standard Mouth opening fits most ice cubes and Hydro Flask caps for versatile use 💧 - • **Pure Taste, Zero Toxins:** 18/8 food-grade stainless steel and BPA-free materials keep flavors fresh and safe 🛡️ - • **Durable & Sweat-Free Grip:** Proprietary powder coat ensures slip-free handling on the move 🤲 - • **Ice-Cold All Day Hydration:** Double-wall TempShield insulation locks in chill for 24 hours ❄️ - • **Adventure-Ready Portability:** Compact 21 oz size fits most cup holders and bike racks for seamless daily carry 🚗 ## Overview The Hydro Flask Standard Mouth Water Bottle (21 oz) features double-wall vacuum TempShield insulation that keeps drinks cold for up to 24 hours and hot for up to 6 hours. Crafted from BPA-free, food-grade 18/8 stainless steel with a durable powder coat finish, it offers a slip-resistant grip and fits most car cup holders and bike racks. Its standard mouth opening accommodates ice cubes and compatible Hydro Flask caps, making it the perfect stylish companion for busy professionals on the go. ## 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 | | Age Range Description | Adult | | Base Diameter | 7.1 Centimetres | | Best Sellers Rank | #164,183 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #3,186 in Water Bottles | | Brand | Hydro Flask | | Cap Type | Screw Cap | | Capacity | 21 Fluid Ounces | | Colour | Black | | Country of Origin | USA | | Customer Reviews | 4.8 out of 5 stars 46,195 Reviews | | Enclosure Material | Stainless Steel | | Global Trade Identification Number | 00810497025680 | | Importer Contact Information | 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 Oven Safe | No | | Is the item dishwasher safe? | Yes | | Is the item microwaveable? | No | | Item Type Name | Water Bottle | | Item Weight | 24 g | | Manufacturer | Hydro Flask, Hydro Flask 525 NW York Dr Bend, OR Sportswear | | Manufacturer Contact Information | Hydro Flask 525 NW York Dr Bend, OR Sportswear | | Manufacturer Warranty Description | 1 Year manufacturer Warranty from the date of purchase | | Model Name | S21SX001 | | Number of Items | 1 | | OutputCapacity | 21 Fluid Ounces | | Packer Contact Information | Hydro Flask 525 NW York Dr Bend, OR Sportswear | | Pattern | Solid | | Product Care Instructions | Hand Wash Only | | Product Features | portable | | Recommended Uses For Product | Water | | Special Feature | portable | | Theme | Food & Beverage | | UPC | 810497025680 | | Unit Count | 1 Count | | 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black](https://www.desertcart.com.ar/products/71953242-standard-mouth-water-bottle-flex-cap-21-oz-black) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-07-30*