--- product_id: 716975326 title: "Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow" brand: "hydro flask" price: "£97.43" currency: GBP in_stock: true reviews_count: 5 category: "Hydro Flask" url: https://www.desertcart.co.uk/products/716975326-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow store_origin: GB region: United Kingdom --- # Leakproof seal 12h heat hold 24h cold lock Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow **Brand:** hydro flask **Price:** £97.43 **Availability:** ✅ In Stock ## Summary > 💧Hydrate like a pro—because your hustle deserves the best! ## Quick Answers - **What is this?** Hydro Flask 21 Oz Standard Mouth Flex Cap Moonshadow by hydro flask - **How much does it cost?** £97.43 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/716975326-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 - • **No Spills, No Stress:** Flex Cap ensures a leakproof experience, perfect for your on-the-go hustle. - • **Pure Taste, Every Sip:** Premium stainless steel construction guarantees zero flavor transfer—hydrate with confidence. - • **Durability Meets Style:** Moonshadow finish offers a sleek, modern look that stands up to your busiest days. - • **Stay Chill or Sizzle All Day:** Keeps beverages icy cold for 24 hours or piping hot for 12 with TempShield️ double-wall vacuum insulation. - • **Designed for Your Active Lifestyle:** Cupholder compatible and pack-friendly size fits seamlessly into your daily grind. ## Overview The Hydro Flask 21 Oz Standard Mouth Flex Cap in Moonshadow is a premium stainless steel insulated water bottle designed for professionals on the move. Featuring TempShield️ double-wall vacuum insulation, it keeps drinks cold for 24 hours and hot for 12 hours. Its leakproof Flex Cap and cupholder-compatible design make it the perfect hydration companion for busy, style-conscious millennials seeking durability and pure taste without compromise. ## 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. Review: Works well as specified - Like all My other hydroflask products- works well, as detailed, and certainly recommended . Note this is not a large capacity bottle- I use it in day pack but have a larger version in car . Review: The best bottle by far - I am super picky with bottles and SO glad to have pixked out this one. ## 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 | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #459,867 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2,377 in Insulated Bottles | | Brand | Hydro Flask | | Cap Type | Flex Cap | | Capacity | 1 Fluid Ounces | | Colour | Moonshadow | | Country of Origin | USA | | Customer Reviews | 4.7 out of 5 stars 343 Reviews | | Enclosure Material | Stainless Steel | | 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 | 14.6W x 22.9H Centimeters | | Item Type Name | Water Bottle | | Item Weight | 0.34 Kilograms | | Manufacturer | Hydro Flask | | Model Name | Standard Mouth Flex Cap Bottle | | Number of Items | 1 | | OutputCapacity | 1 Fluid Ounces | | Pattern | Solid | | Product Care Instructions | Hand Wash Only | | Product Features | Vacuum Insulated | | Recommended Uses For Product | Water | | Special Feature | Vacuum Insulated | | Theme | Sport | | UPC | 840394203737 | | Unit Count | 1.0 Count | | With Lid | Yes | ## Product Details - **Brand:** Hydro Flask - **Capacity:** 1 Fluid Ounces - **Colour:** Moonshadow - **Recommended Uses For Product:** Water - **Special Feature:** 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well as specified *by Y***R on 10 January 2026* Like all My other hydroflask products- works well, as detailed, and certainly recommended . Note this is not a large capacity bottle- I use it in day pack but have a larger version in car . ### ⭐⭐⭐⭐⭐ The best bottle by far *by S***. on 5 October 2025* I am super picky with bottles and SO glad to have pixked out this one. ### ⭐⭐⭐⭐⭐ Recomendo. *by N***A on 7 June 2025* Essa garrafa é excelente! Conserva a água por muito tempo gelada, é resistente e bonita. É a segunda unidade que comprei dessa marca; minha filha mais velha já usa uma a 1 ano. De todas que já comprei aqui no Brasil, essa é a melhor. Recomendo. ## 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 --- ## 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.co.uk/products/716975326-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow](https://www.desertcart.co.uk/products/716975326-hydro-flask-21-oz-standard-mouth-flex-cap-moonshadow) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-29*