--- product_id: 483448372 title: "Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle" brand: "hydro flask" price: "¥18794" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/483448372-hydro-flask-standard-flex-straw-cap-621-ml-21-oz store_origin: JP region: Japan --- # Leak-proof Flex Straw Lid Keeps drinks hot 12h Keeps drinks cold 24h Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle **Brand:** hydro flask **Price:** ¥18794 **Availability:** ✅ In Stock ## Summary > 💼 Stay refreshed, stay unstoppable with Hydro Flask. ## Quick Answers - **What is this?** Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle by hydro flask - **How much does it cost?** ¥18794 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/483448372-hydro-flask-standard-flex-straw-cap-621-ml-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 - • **Confidence in Every Sip:** Backed by a lifetime warranty, Hydro Flask guarantees quality that lasts a lifetime. - • **Built to Brave Your Hustle:** Durable, eco-friendly stainless steel withstands every adventure without compromising taste. - • **One-Handed Hydration Mastery:** Leak-proof Flex Straw Cap lets you sip effortlessly while conquering your busy day. - • **Stay Chill or Sizzle On-the-Go:** Double-wall vacuum insulation locks in your ideal drink temp for up to 24 hours cold or 12 hours hot. - • **Effortless Clean-Up, More You-Time:** Dishwasher safe with powder coating means less scrubbing, more living. ## Overview The Hydro Flask 621 ml water bottle features double-wall vacuum insulation with TempShield technology to keep beverages cold for 24 hours or hot for 12 hours. Its leak-proof Flex Straw Cap enables easy one-handed drinking, while the durable stainless steel construction ensures long-lasting use. Finished with a powder coating for dishwasher-safe cleaning, this bottle is backed by a lifetime warranty, making it the perfect companion for active professionals seeking reliable hydration. ## Description This stainless steel bottle keeps drinks cold 24 hrs, hot 12 hrs, thanks to vacuum insulation. The leak-proof straw lid allows easy, one-handed drinking on the move. Review: Keeps liquids cold/hot for more than 8 hours - Since I have had my pink Hydro flask, I have been amazed at how well it has kept liquids cold. I left a full flask of ice cold water in it over 36 hours and was shocked that it was still ice cold when I actually sucked it up the straw. This was an amazing find now although I’ve never tried it with hot liquids I have no doubt that this would keep any liquid. I have hot all day no trouble at all. The seal must be absolutely superb for it to have kept my drink cold for so long when it comes to functionality I find it suits my needs as my hands are not very strong. I like the fact it has a strap handle so I can hook it out to bring it to me. I like the fact that I do not have to push very hard on the hinge of the straw for it to come up and although at the beginning I couldn’t unscrew the cap that was not because it wasn’t easy to undo, but because my hands are not strong enough. With such a wonderful choice of colours I chose pink because it matched my cupholder which it fits very very well. Although some people might think the price is quite high, I think considering this has kept everything colder than I ever expected longer than I ever expected. It is definitely worth every penny I spent and I’m considering buying a second one. If I could give it 10 stars I would that’s how good this is-if you haven’t bought one yet I can definitely recommend you do. Review: Great product, built to last - Really well built and should last years, looks great also, keeps things really cold especially in this heat ## Features - IDEAL DRINKING TEMPERATURE: Our double-wall vacuum-insulated bottle keeps beverages cold for up to 24 hours and hot for up to 12 hours. The TempShield technology prevents condensation and heat transfer to the outside. - BETTER DRINKING ON THE GO: With double-wall, vacuum-insulated technology, our water bottle maintains the IDEAL temperature. The leak-proof Flex Straw Lid allows for easy drinking with just one hand. - DURABLE WATER BOTTLE: Our eco-friendly, sturdy stainless steel bottle is perfect for any type of sport. The durable construction withstands everything life throws at it, while keeping the taste of your drink intact. - DISHWASHER SAFE: Our water bottles come with a powder coating that makes cleaning a breeze. Enjoy more leisure time and less work with this convenient feature. - SATISFACTION GUARANTEED: We offer a lif etime warranty against manufacturer defects. HYDRO FLASK stands behind our durable and robust materials and is committed to high standards. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09SBQHL9K | | Age Range Description | Adult | | Age range (description) | Adult | | Base Diameter | 7.3 Centimetres | | Best Sellers Rank | 20,370 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 118 in Insulated Bottles | | Brand | Hydro Flask | | Brand Name | Hydro Flask | | Cap Type | Straw Cap | | Capacity | 621 ml | | Colour | White | | Customer Reviews | 4.7 out of 5 stars 2,719 Reviews | | Included Components | Straw | | Is Oven Safe | No | | Is the item dishwasher safe? | Yes | | Is the item microwaveable? | No | | Item Dimensions W x H | 7.2W x 28.6H centimetres | | Item Type Name | HYDRATION HARDGOODS | | Item Weight | 0.43 Kilograms | | Manufacturer | Hydro Flask | | Manufacturer Warranty Description | Hydro flask lifetime warranty. | | Material Type | Stainless Steel | | Model Name | Standard Flex Straw Cap Bottle | | Number of Items | 1 | | Pattern | Solid | | Product Care Instructions | Hand Wash Only | | Recommended Uses For Product | Coffee, Tea, Water | | Recommended uses for product | Coffee, Tea, Water | | Special Features | Cold 24 Hours, Dishwasher Safe, Double Wall, Hot 12 Hours, Leakproof | | Special feature | Cold 24 Hours, Dishwasher Safe, Double Wall , Hot 12 Hours, Leakproof | | Theme | Sport | | UPC | 810028843042 | | Unit Count | 1.0 count | | With Lid | Yes | ## Product Details - **Brand:** Hydro Flask - **Capacity:** 621 ml - **Colour:** White - **Recommended uses for product:** Water - **Special feature:** Cold 24 Hours, Dishwasher Safe, leak ## Images ![Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle - Image 1](https://m.media-amazon.com/images/I/51fj1YIxVEL.jpg) ![Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle - Image 2](https://m.media-amazon.com/images/I/81qVcNhfPxL.jpg) ![Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle - Image 3](https://m.media-amazon.com/images/I/71FooISuprL.jpg) ![Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle - Image 4](https://m.media-amazon.com/images/I/818bf4SYFsL.jpg) ![Hydro Flask – Standard Flex Straw Cap 621 ml (21 oz) Bottle - Image 5](https://m.media-amazon.com/images/I/71a6EtbNxYL.jpg) ## Available Options This product comes in different **Colour Name** options. ## Questions & Answers **Q: Am I able to buy any of the bottles that already have the flex straw lid on them or do I have to buy that lid separately?** A: You are able to buy bottles that already come with a flex Straw cap, but for the availability of those units, you need to check with a dealer directly. Your Hydro Flask team. **Q: Why does it state flex cap as being ‘girls’?** A: No idea. This came with a twist cap and it is fine. I use sports bottles with different caps for when in the gym etc. The hydroflask is a really solid design. **Q: What diameter is the base** A: Hello, The diameter of both the 18 Ounce and 21 ounce Standard mouth bottle is 2.87 Inches or 7.29 centimetres. **Q: Hi how do I know if it is legitimate?** A: it is legit, it's a great flask ## Customer Reviews ### ⭐⭐⭐⭐⭐ Keeps liquids cold/hot for more than 8 hours *by S***O on 4 August 2025* Since I have had my pink Hydro flask, I have been amazed at how well it has kept liquids cold. I left a full flask of ice cold water in it over 36 hours and was shocked that it was still ice cold when I actually sucked it up the straw. This was an amazing find now although I’ve never tried it with hot liquids I have no doubt that this would keep any liquid. I have hot all day no trouble at all. The seal must be absolutely superb for it to have kept my drink cold for so long when it comes to functionality I find it suits my needs as my hands are not very strong. I like the fact it has a strap handle so I can hook it out to bring it to me. I like the fact that I do not have to push very hard on the hinge of the straw for it to come up and although at the beginning I couldn’t unscrew the cap that was not because it wasn’t easy to undo, but because my hands are not strong enough. With such a wonderful choice of colours I chose pink because it matched my cupholder which it fits very very well. Although some people might think the price is quite high, I think considering this has kept everything colder than I ever expected longer than I ever expected. It is definitely worth every penny I spent and I’m considering buying a second one. If I could give it 10 stars I would that’s how good this is-if you haven’t bought one yet I can definitely recommend you do. ### ⭐⭐⭐⭐⭐ Great product, built to last *by S***L on 8 July 2026* Really well built and should last years, looks great also, keeps things really cold especially in this heat ### ⭐⭐⭐⭐⭐ Great bottle *by B***W on 10 September 2026* Light weight no leaks and keeps drinks cool for hours ## Frequently Bought Together - Hydro Flask - Water Bottle 621 ml (21 oz) - Vacuum Insulated Stainless Steel Water Bottle with Flex Straw Cap - Standard Mouth - White - hydro flask - flex for --- ## 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.jp/products/483448372-hydro-flask-standard-flex-straw-cap-621-ml-21-oz](https://www.desertcart.jp/products/483448372-hydro-flask-standard-flex-straw-cap-621-ml-21-oz) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-28*