--- product_id: 549464501 title: "40 oz Double Wall Vacuum Insulated Stainless Steel 2-Pack of Water Bottles, Onyx Black/Splash" brand: "thermoflask" price: "VT54727" currency: VUV in_stock: true reviews_count: 4 category: "Thermo Flask" url: https://www.desertcart.vu/products/549464501-40-oz-double-wall-vacuum-insulated-stainless-steel-2-pack store_origin: VU region: Vanuatu --- # 100% leak-proof chug lid 12-hour hot retention 24-hour cold retention 40 oz Double Wall Vacuum Insulated Stainless Steel 2-Pack of Water Bottles, Onyx Black/Splash **Brand:** thermoflask **Price:** VT54727 **Availability:** ✅ In Stock ## Summary > 💧 Stay cool, stay hot, stay ahead—hydrate like a pro with ThermoFlask! ## Quick Answers - **What is this?** 40 oz Double Wall Vacuum Insulated Stainless Steel 2-Pack of Water Bottles, Onyx Black/Splash by thermoflask - **How much does it cost?** VT54727 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/549464501-40-oz-double-wall-vacuum-insulated-stainless-steel-2-pack) ## Best For - thermoflask enthusiasts ## Why This Product - Trusted thermoflask brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Eco-Chic:** Premium stainless steel construction built to last, reducing single-use plastic waste in style. - • **All-Day Temperature Lock:** Double-wall vacuum insulation keeps drinks icy cold or piping hot for hours, no compromises. - • **Perfect Fit for Your Hustle:** 40 oz capacity fits most cup holders and backpacks—hydration that moves with your busy lifestyle. - • **Two-Pack Value & Versatility:** Get double the hydration options with two sleek bottles in Onyx Black and Splash—never run dry. - • **Effortless One-Handed Hydration:** Innovative leak-proof chug lid designed for quick sips on the move—spill-free confidence. ## Overview ThermoFlask 40 oz Double Wall Vacuum Insulated Stainless Steel 2-Pack offers superior temperature retention—keeping beverages cold for up to 24 hours and hot for up to 12 hours. Featuring a leak-proof chug lid for easy one-handed use, these durable bottles are designed for active professionals seeking sustainable, stylish hydration on the go. Dishwasher safe and perfectly sized to fit most cup holders, this set combines convenience, performance, and eco-conscious design. ## Description Keep your beverages cold all day without a cooler (or hot without a microwave) Our double-wall vacuum insulated stainless steel bottles prevent outside temperatures from affecting the inside beverage temperature so your drink stays just the way you like it – all day long. Great for everyday adventures or outdoor activities like hiking, camping, biking, sports, picnics, and more. Drink the way you want with easy, controlled one-handed drinking. Review: Keeps cold! - Amazing - keeps cold for ages Review: Really useful bottles - Having just done a review of the wide mouth replacement lids (that you suck through rather than pour) felt it necessary to review the bottles themselves. Bought my first pair at Costco and they were so so useful tried to get two more but Costco don't do then now so tried and succeded with desertcart UK. More robust than plastic bottles and keep the water really cool. I use my for squash as plain water not to my liking but you do need to wash out bottle and lid frequently as the squash can leave residue which will tiant the taste, especially black currant and apple. ## Features - Stay Hydrated All Day: 2-Pack ThermoFlask Stainless Bottles ensure your drinks remain at the ideal temperature with double-wall vacuum insulation. Perfect for all-day freshness. - Leak-Proof Chug Lid: Enjoy hassle-free hydration with our water bottle's innovative Chug lid, designed for easy one-handed sipping without spills. Perfect for on-the-go refreshment. - Adventure-Ready Hydration: ThermoFlask's insulated bottles are your daily companion, keeping hot drinks warm and cold beverages chilled. Ideal for the active lifestyle. - Versatile Hydration Options: Choose from our premium 14-64 oz insulated bottles in various colors. Fits most cup holders and backpacks, ensuring hydration is always at hand. - Sustainable Quality with ThermoFlask: Embrace eco-friendly hydration for outdoor activities or daily commuting. Our durable stainless steel bottles are built to last. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BBPNVNT2 | | Age Range Description | Adult | | Age range (description) | Adult | | Base Diameter | 3.75 Inches | | Best Sellers Rank | 427,146 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 4,388 in Cycling Bottles | | Brand | ThermoFlask | | Brand Name | ThermoFlask | | Cap Type | Screw Cap | | Capacity | 40 Fluid Ounces | | Colour | Onyx Black/Splash | | Customer Reviews | 4.8 out of 5 stars 14,142 Reviews | | Global Trade Identification Number | 00885395101583 | | Included Components | Two Bottles, Two Lids | | Is the item dishwasher safe? | Yes | | Is the item microwaveable? | No | | Item Dimensions W x H | 21.8W x 30.2H centimetres | | Item Type Name | 2-Pack of Water Bottles | | Item Weight | 1227 Grams | | Item height | 11.9 inches | | Manufacturer | Takeya | | Material Type | Stainless Steel | | Model Name | ThermoFlask | | Number of Items | 2 | | Pattern | Solid | | Product Care Instructions | Hand Wash Only | | Recommended Uses For Product | Hot | | Recommended uses for product | Hot | | Special Features | Leakproof | | Special feature | Leakproof | | Theme | Sport | | UPC | 885395101583 | | Unit Count | 2.0 count | | With Lid | Yes | ## Product Details - **Brand:** ThermoFlask - **Capacity:** 40 Fluid Ounces - **Colour:** Onyx Black/Splash - **Recommended uses for product:** Hot - **Special feature:** Leakproof ## Images ![40 oz Double Wall Vacuum Insulated Stainless Steel 2-Pack of Water Bottles, Onyx Black/Splash - Image 1](https://m.media-amazon.com/images/I/71VDcTo19RL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: These are 40 oz right?** A: Yes both are 40 oz **Q: What are the dimentions?** A: The thermoflask can fill 710ml or 24oz of hot or cold water, it comes in 2 bottles in one box. These are brand new. Hope I answered your question. Phoenix **Q: How much does the 24oz bottle weigh?** A: It's quite heavy. It weighs about 10oz. empty. **Q: Will it fit in a standard car cup holder? What is the width of the base of the bottle?** A: Thank you for your interest. These have a diameter of 3.15" with the bumper and 2.92" without the bumper. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Keeps cold! *by L***N on 9 April 2026* Amazing - keeps cold for ages ### ⭐⭐⭐⭐⭐ Really useful bottles *by S***K on 8 March 2022* Having just done a review of the wide mouth replacement lids (that you suck through rather than pour) felt it necessary to review the bottles themselves. Bought my first pair at Costco and they were so so useful tried to get two more but Costco don't do then now so tried and succeded with Amazon UK. More robust than plastic bottles and keep the water really cool. I use my for squash as plain water not to my liking but you do need to wash out bottle and lid frequently as the squash can leave residue which will tiant the taste, especially black currant and apple. ### ⭐⭐⭐⭐⭐ Hits the spot *by M***P on 13 September 2020* Bought this for my son to take to school, we have been using on trips outside home all summer. I took off the straw, and it works perfectly well and maintains the temperature for a good 5-6 hours. Easy to clean, easy to use and the lids are interchangeable. What’s not to like! ## Frequently Bought Together - Thermoflask Double Wall Vacuum Insulated Stainless Steel Water Bottle (Onyx Black/Splash) - Prurex Replacement Spout Lid for Hydro Flask Wide Mouth Bottles (12/16/18/22/32/40/64oz) – 2.28" Leak-Proof Sports Cap Accessory, Secure Fit --- ## 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.vu/products/549464501-40-oz-double-wall-vacuum-insulated-stainless-steel-2-pack](https://www.desertcart.vu/products/549464501-40-oz-double-wall-vacuum-insulated-stainless-steel-2-pack) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-02*