<h2>Stay Hot or Cold All Day – 400ml Double-Wall Vacuum Flask</h2> <p>Meet your new everyday essential: a sleek, <strong>double-walled 304 stainless steel vacuum flask</strong> that keeps your drinks at exactly the temperature you love. Whether you're sipping a morning coffee on your commute, enjoying iced tea at the gym, or relaxing at home with a warm smoothie, this 400ml insulated mug is built to deliver.</p> <p><em>Made in Mainland China.</em></p> <h3>Why You'll Love It</h3> <ul> <li> <strong>Food-Grade 304 Stainless Steel + PP Liner</strong> – Thick, durable, and healthy. No unwanted flavours, no rust, no worries.</li> <li> <strong>Double-Wall Vacuum Insulation</strong> – Locks in heat or cold for hours, so your drink stays just the way you made it.</li> <li> <strong>Generous 400ml Capacity</strong> – The perfect size for a full coffee, tea, juice, or smoothie without constant refills.</li> <li> <strong>100% Leak-Proof Seal</strong> – Toss it in your bag with confidence. No drips, no spills.</li> <li> <strong>Comfortable Handle</strong> – Ergonomic grip for easy carrying whether you're heading to the office, school, gym, or on a hike.</li> <li> <strong>Versatile Colours</strong> – Available in classic White, sophisticated Black, and warm Brown to match your style.</li> <li> <strong>Thoughtful Gift Idea</strong> – Packaged neatly and ready to delight a friend, colleague, or family member.</li> </ul> <h3>Specifications</h3> <table> <tr> <td><strong>Material</strong></td> <td>304 Stainless Steel + PP</td> </tr> <tr> <td><strong>Capacity</strong></td> <td>400ml (13.5 fl oz)</td> </tr> <tr> <td><strong>Dimensions</strong></td> <td>10.5 × 9 cm (4.13 × 3.54 in)</td> </tr> <tr> <td><strong>Available Colours</strong></td> <td>White, Black, Brown</td> </tr> <tr> <td><strong>Package Contents</strong></td> <td>1 × Thermos Vacuum Mug</td> </tr> </table> <h3>Perfect For</h3> <ul> <li>☕ Hot coffee, tea, hot chocolate</li> <li>🧃 Cold juice, iced tea, smoothies</li> <li>🏋️ Gym, office, school, travel, home</li> </ul> <h3>You May Also Like</h3> <ul> <li><a href="/products/1pc-household-stainless-steel-kitchen-frying-mold-potato-cake-tool-spoon-fried-food-mold-kitchen-cooking-tools">1PC Household Stainless Steel Kitchen Cooking Tool</a></li> <li><a href="/products/2pcs-thickened-oven-mitts-heat-resistant-kitchen-gloves-microwave-baking-gloves-machine-washable-essential-kitchen-tool-for-hot">2Pcs Heat-Resistant Kitchen Oven Mitts &amp; Baking Gloves</a></li> <li><a href="/products/1pc-versatile-spiral-slicer-for-cucumbers-carrots-potatoes-durable-kitchen-gadget">1PC Versatile Spiral Slicer – Durable Kitchen Gadget</a></li> </ul> <p><em>Please note: Photos may not reflect actual size — refer to the specifications above for accurate dimensions. Minor colour variations may occur due to monitor settings. Allow a slight tolerance for manual measurements.</em></p> <p>Learn more: <a href="https://www.nutrition.gov/topics/shopping-cooking-and-food-safety" target="_blank" rel="noopener">Nutrition.gov on cooking and food safety</a></p> <h3>Frequently Asked Questions</h3> <h4>Q: What material is this vacuum flask made from?</h4> <p>A: This thermal mug features a food-grade <strong>304 stainless steel</strong> inner liner combined with a durable PP (polypropylene) outer body. 304 stainless steel is widely regarded as a safe, rust-resistant material that won't impart flavours or odours to your drinks.</p> <h4>Q: How long does this insulated mug keep drinks hot or cold?</h4> <p>A: Thanks to its double-wall vacuum insulation design, this 400ml flask is engineered to maintain beverage temperatures for several hours — keeping hot drinks hot and cold drinks cold throughout your day.</p> <h4>Q: Is this 400ml thermal mug leak-proof?</h4> <p>A: Yes! This vacuum flask features a leak-proof seal, making it safe to carry in a bag or backpack without worrying about spills — ideal for commuting, gym sessions, or travel.</p