--- product_id: 39160479 title: "Standard Flex Cap White 18 Oz" brand: "hydro flask" price: "£41.22" currency: GBP in_stock: true reviews_count: 13 category: "Hydro Flask" url: https://www.desertcart.co.uk/products/39160479-standard-flex-cap-white-18-oz store_origin: GB region: United Kingdom --- # Leakproof seal 12 hrs hot retention 24 hrs cold retention Standard Flex Cap White 18 Oz **Brand:** hydro flask **Price:** £41.22 **Availability:** ✅ In Stock ## Summary > 💧 Stay cool, stay hot, stay ahead with Hydro Flask’s Standard Flex Cap! ## Quick Answers - **What is this?** Standard Flex Cap White 18 Oz by hydro flask - **How much does it cost?** £41.22 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/39160479-standard-flex-cap-white-18-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 - • **Sleek & Functional:** 18 oz capacity fits most cup holders with a stylish white finish and ergonomic grip for your daily hustle. - • **Leakproof Confidence:** Secure flex cap ensures zero spills, perfect for on-the-go professionals juggling meetings and workouts. - • **Zero Flavor Transfer:** Enjoy pure, fresh taste every sip—no lingering flavors thanks to durable stainless steel construction. - • **All-Day Chill & Warmth:** Keeps beverages icy cold for 24 hours and steaming hot for 12 hours with TempShield️ double-wall vacuum insulation. - • **Effortless Clean & Care:** Dishwasher safe design means less hassle, more hydration—ready for your busiest days. ## Overview The Hydro Flask Standard Flex Cap White 18 oz water bottle features TempShield️ double-wall vacuum insulation that keeps drinks cold for 24 hours and hot for 12 hours. Crafted from durable, BPA-free stainless steel, it guarantees no flavor transfer and a leakproof seal when closed. Dishwasher safe and cupholder compatible, this sleek, white bottle is designed for professionals who demand reliable hydration on the move. ## Description Shop Travel Bottle Visit the Store Shop Travel Bottle Visit the Store Shop Travel Tumbler Visit the Store Shop Travel Tumbler Shop Straw Bottle Visit the Store Shop Straw Bottle Shop Coffee Mug Visit the Store Shop Coffee Mug Review: high-quality insulated steel. - I’ve been using this Hydro Flask water bottle for a few weeks now, and it has quickly become my go-to for daily hydration. The insulation performance is outstanding—my water stays ice-cold for a full day, even when I leave the bottle in my car or take it outdoors. It also keeps hot drinks warm for hours, which is a huge bonus. The build quality is top-notch. The stainless steel feels durable and premium, and I love that it doesn’t retain any flavors from previous drinks. Everything tastes fresh every time. Another big plus is the leakproof design. I’ve tossed it into my backpack multiple times without worrying about spills. The wide mouth also makes it easy to add ice cubes and clean thoroughly. I also appreciate the sleek design and powder-coated finish, which gives it a great grip and prevents condensation on the outside. It’s both functional and stylish. If I had to mention one small downside, it’s that the bottle can feel a bit heavy when full—but that’s expected with high-quality insulated steel. Overall, this is a reliable, durable, and high-performing water bottle that’s absolutely worth the price. Highly recommend for anyone looking for a long-lasting insulated bottle! Review: Love Zulu H2O bottles! - Perfect metal water bottle! It has a handle, fits in the car holder, easy to clean, nice color , holds ice cold temperature well, has a good drinking spout, good value for the price and seems to be leak resistant. If only my husband stops losing them - this is Zulu number 3. ## Features - 24 hours cold, 12 hours hot - TempShield️ double-wall vacuum insulation - Leakproof when closed - Pure taste, no flavor transfer - Durable stainless steel - BPA-Free - Dishwasher safe - Not for use on a stove, in a microwave or freezer - Keep hot liquids out of the reach of children - water bottle, leakproof, insulated, 24 hours cold, 12 hours hot, dishwasher safe, 18 oz, cupholder compatible ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01KXHH0QG | | Additional Features | Straw, dishwasher safe, double wall, leak-proof, insulated, leak-proof | | Age Range (Description) | Adult | | Age Range Description | Adult | | Base Diameter | 2.8 Inches | | Best Sellers Rank | #6,052 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #128 in Insulated Bottles #275 in Water Bottles | | Brand | Hydro Flask | | Brand Name | Hydro Flask | | Cap Type | Flex Cap | | Capacity | 18 Fluid Ounces | | Color | White | | Customer Reviews | 4.8 out of 5 stars 10,286 Reviews | | Global Trade Identification Number | 00810497025581 | | Included Components | Lid | | Is Oven Safe | No | | Is the item dishwasher safe? | No | | Is the item microwaveable? | No | | Item Dimensions W x H | 1.12"W x 4.06"H | | Item Type Name | Water Bottle | | Item Weight | 0.05 Pounds | | Manufacturer | Hydro Flask | | Manufacturer Warranty Description | LIFETIME | | Material Type | STEEL | | Model Name | 18 OZ STANDARD FLEX CAP | | Number of Items | 1 | | Pattern | Plain-Coloured | | Product Care Instructions | Dishwasher safe | | Recommended Uses For Product | Water | | Special Feature | Straw, dishwasher safe, double wall , leak-proof, insulated, leak-proof | | Theme | Sport | | UPC | 810497025581 | | Unit Count | 1.0 Count | | With Lid | Yes | ## Product Details - **Brand:** Hydro Flask - **Capacity:** 18 Fluid Ounces - **Color:** White - **Recommended Uses For Product:** Water - **Special Feature:** Straw, dishwasher safe, double wall, leak-proof, insulated, leak-proof ## Images ![Standard Flex Cap White 18 Oz - Image 1](https://m.media-amazon.com/images/I/51oHnR7eiAL.jpg) ## Available Options This product comes in different **Color, Style** 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 ### ⭐⭐⭐⭐⭐ high-quality insulated steel. *by R***S on March 31, 2026* I’ve been using this Hydro Flask water bottle for a few weeks now, and it has quickly become my go-to for daily hydration. The insulation performance is outstanding—my water stays ice-cold for a full day, even when I leave the bottle in my car or take it outdoors. It also keeps hot drinks warm for hours, which is a huge bonus. The build quality is top-notch. The stainless steel feels durable and premium, and I love that it doesn’t retain any flavors from previous drinks. Everything tastes fresh every time. Another big plus is the leakproof design. I’ve tossed it into my backpack multiple times without worrying about spills. The wide mouth also makes it easy to add ice cubes and clean thoroughly. I also appreciate the sleek design and powder-coated finish, which gives it a great grip and prevents condensation on the outside. It’s both functional and stylish. If I had to mention one small downside, it’s that the bottle can feel a bit heavy when full—but that’s expected with high-quality insulated steel. Overall, this is a reliable, durable, and high-performing water bottle that’s absolutely worth the price. Highly recommend for anyone looking for a long-lasting insulated bottle! ### ⭐⭐⭐⭐⭐ Love Zulu H2O bottles! *by N***H on August 4, 2025* Perfect metal water bottle! It has a handle, fits in the car holder, easy to clean, nice color , holds ice cold temperature well, has a good drinking spout, good value for the price and seems to be leak resistant. If only my husband stops losing them - this is Zulu number 3. ### ⭐⭐⭐⭐⭐ It’s worth it! *by M***S on November 2, 2024* ⭐️⭐️⭐️⭐️⭐️ This Hydro Flask is absolutely perfect for school! The 21 oz size fits perfectly in the side pocket of my child’s backpack, and he was thrilled with how cold it kept his water all day – much better than any plastic bottle we’ve tried. It’s sturdy, easy to carry with the Flex Cap, and holds up great to daily use. I was so impressed that I bought a second one right away for my other child. Definitely worth it for a high-quality, reliable water bottle! ## Frequently Bought Together - Hydro Flask Standard Flex Cap White 18 Oz - Hydro Flask Stainless Steel Standard Mouth Water Bottle with Flex Cap and Double-Wall Vacuum Insulation - 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.co.uk/products/39160479-standard-flex-cap-white-18-oz](https://www.desertcart.co.uk/products/39160479-standard-flex-cap-white-18-oz) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-22*