<h2>WHPHous 400ml Double-Wall Insulated Stainless Steel Tumbler</h2> <p>Meet your new everyday companion — the <strong>WHPHous 400ml Insulated Tumbler</strong>. Crafted from food-grade 304 stainless steel with a double-wall vacuum design, this sleek mug keeps your coffee, tea, or milk at the perfect temperature whether you're at the office, in class, or on the go. Made in Mainland China.</p> <h3>Key Features</h3> <ul> <li> <strong>Generous 400ml Capacity:</strong> Holds enough for a full coffee, generous tea brew, or a tall glass of milk — ideal for all-day hydration at your desk or in your bag.</li> <li> <strong>Food-Grade 304 Stainless Steel:</strong> Odorless, corrosion-resistant, and built to last. No metallic taste, no harmful chemicals — just clean, safe sipping every time.</li> <li> <strong>Double-Wall Vacuum Insulation:</strong> Advanced double-layer construction locks in heat in winter and keeps drinks refreshingly cold in summer, maintaining your ideal temperature for hours longer than a standard mug.</li> <li> <strong>Leak-Proof Sealed Lid:</strong> The secure, sealed lid prevents spills even when inverted, giving you total peace of mind tossing it into a backpack or briefcase.</li> <li> <strong>Compact &amp; Portable:</strong> Slim, lightweight design slips easily into cup holders, bag pockets, and desk organizers — a must-have for students and busy professionals alike.</li> <li> <strong>Stylish Office &amp; Lifestyle Design:</strong> Clean, minimalist aesthetic complements any workspace or classroom setting. Perfect for brewing tea, pouring coffee, or enjoying a cold smoothie.</li> </ul> <h3>Specifications</h3> <ul> <li> <strong>Brand:</strong> WHPHous</li> <li> <strong>Material:</strong> 304 Food-Grade Stainless Steel</li> <li> <strong>Capacity:</strong> 400ml</li> <li> <strong>Construction:</strong> Double-Wall Insulation</li> <li> <strong>Lid:</strong> Sealed, leak-proof</li> <li> <strong>Quantity:</strong> 1 piece</li> <li> <strong>Country of Origin:</strong> Made in Mainland China</li> </ul> <h3>Please Note</h3> <ul> <li>Photos may not reflect actual size — please refer to the specifications above.</li> <li>Minor measurement differences may exist due to manual measuring.</li> <li>Colors may vary slightly between monitors and actual product.</li> </ul> <h3>Complete Your Coffee Ritual</h3> <p>Looking for the perfect companions for your insulated tumbler? Check out these popular picks from our store:</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 Stainless Steel Coffee Milk Frothing Pitcher</a> — froth milk like a pro barista at home.</li> <li> <a href="/products/bincoo-540ml-cold-brew-coffee-maker-with-filter-heat-resistant-pitcher-iced-americano-coffee-pot-household-cold-brew-coffee-uten">Bincoo 540ML Cold Brew Coffee Maker</a> — brew smooth iced coffee to pour straight into your tumbler.</li> <li> <a href="/products/bincoo-coffee-share-pot-pour-over-coffee-dripper-set-500ml-glass-server-v01-funnel-drip-maker-brew-cup-coffee-sharing-pots-set">Bincoo Pour Over Coffee Dripper Set</a> — craft a fresh drip brew to enjoy from your insulated mug.</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: Is the 304 stainless steel tumbler safe for hot beverages like coffee and tea?</h4> <p>A: Yes! The WHPHous tumbler is made from food-grade 304 stainless steel, which is odorless, corrosion-resistant, and completely safe for hot beverages such as coffee, tea, and hot chocolate, as well as cold drinks like iced water or milk.</p> <h4>Q: How long does the double-wall insulation keep drinks hot or cold?</h4> <p>A: The double-wall vacuum insulation is engineered to maintain your drink's tem