<h2>Stay Hot or Cold for Hours — The Ultimate Leak-Proof Thermal Tumbler</h2> <p>Meet your new go-to travel companion: a beautifully crafted <strong>500ml double-wall stainless steel thermal coffee mug</strong> that keeps your favourite drinks at the perfect temperature, wherever your day takes you. Whether you're sipping a morning coffee on the commute or enjoying an iced drink at your desk, this tumbler delivers outstanding insulation and a no-fuss, leak-proof seal.</p> <p>Made in Mainland China.</p> <h3>Key Features</h3> <ul> <li> <strong>304 Stainless Steel Inner Tank</strong> — Food-safe, corrosion-resistant, and acid &amp; alkali resistant. Suitable for coffee, tea, milk, soy milk, cold brew, juices, and more.</li> <li> <strong>Double-Wall Vacuum Insulation</strong> — Keeps drinks warm for 6–12 hours and cold beverages refreshingly cool throughout the day.</li> <li> <strong>Leak-Proof Silicone Sealing Ring</strong> — A precision-fitted silicone gasket locks in liquid, so you can toss it in your bag with total confidence.</li> <li> <strong>Wide-Mouth Large Caliber Design</strong> — Easy to fill, brew directly in the cup, and thoroughly clean — no awkward angles or hard-to-reach corners.</li> <li> <strong>Ergonomic Arc Handle</strong> — A thoughtfully curved handle provides a comfortable, secure grip whether you're rushing or relaxing.</li> <li> <strong>Stable Concave Base</strong> — The recessed bottom keeps your mug firmly in place on any surface.</li> <li> <strong>500ml Capacity</strong> — The perfect size for a generous serving of your favourite hot or cold beverage.</li> <li> <strong>Available in 4 Colours</strong> — White, Red, Black, and Coffee to match your personal style.</li> </ul> <h3>Specifications</h3> <table> <tr> <td><strong>Capacity</strong></td> <td>500ml</td> </tr> <tr> <td><strong>Insulation</strong></td> <td>6–12 hours (hot &amp; cold)</td> </tr> <tr> <td><strong>Inner Material</strong></td> <td>304 Stainless Steel</td> </tr> <tr> <td><strong>Outer Shell</strong></td> <td>PPA Material</td> </tr> <tr> <td><strong>Sealing Ring</strong></td> <td>Food-Grade Silicone / Rubber</td> </tr> <tr> <td><strong>Colours</strong></td> <td>White, Red, Black, Coffee</td> </tr> </table> <h3>What's in the Box</h3> <ul> <li>1 × Thermal Tumbler Mug with Lid</li> </ul> <h3>Pair It With Your Perfect Coffee Setup</h3> <p>Love great coffee? Explore more of our barista-quality tools:</p> <ul> <li><a href="/products/350-600ml-coffee-milk-frothing-pitcher-jug-304-stainless-steel-precise-scale-high-quality-latte-barista-professional-cafeutensil">350/600ML Coffee Milk Frothing Pitcher Jug – 304 Stainless Steel with Precise Scale</a></li> <li><a href="/products/bincoo-600ml-cold-brew-tumbler-food-grade-tritan-iced-coffee-maker-outdoor-leak-proof-portable-cold-extraction-water-bottle">Bincoo 600ml Cold Brew Tumbler – Food-Grade Tritan, Portable &amp; Leak-Proof</a></li> <li><a href="/products/bincoo-cold-brew-coffee-pitcher-1200ml-large-glass-water-jug-for-iced-tea-fruit-infusion-cold-brew-maker-for-home">Bincoo Cold Brew Coffee Pitcher 1200ml – Large Glass Water Jug for Iced Tea &amp; Cold Brew</a></li> </ul> <p>Learn more: <a href="https://www.fda.gov/food/buy-store-serve-safe-food/food-safety-your-kitchen" target="_blank" rel="noopener">FDA food safety in the kitchen</a></p> <h3>Frequently Asked Questions</h3> <h4>Q: How long does this thermal coffee mug keep drinks hot or cold?</h4> <p>A: Thanks to its double-wall vacuum insulation technology, this stainless steel tumbler keeps hot drinks warm for 6–12 hours and cold drinks refreshingly cool for extended periods — perfect for long commutes, workdays, or outdoor adventures.</p> <h4>Q: Is the 500ml thermal mug truly leak-proof?</h4> <p>A: Yes! The mug features a precision-fitted food-grade silicone sealing ring that creates a secure, watertight seal. You can safely carry it in a bag without worrying about spills or leaks.</p> <h4>Q: What bev