This product has two sizes a 320ml and 440ml, insulation and cold, homemade drinks super cool, wide mouth bottle mouth has a variety of brewing methods, double-layer stainless steel liner, food-grade material, bright and easy to clean, insulation and freshness to reduce the attachment of drinks, a flush clean, does not contain harmful heavy metals, 304 stainless steel liner, corrosion resistance, acid and alkali resistance, suitable for coffee and other drinks brewing, 360 seal ring, shaking inverted without leakage, upgrade multi-layer process, vacuum lock temperature, PC material lid, no BPA composition, not easy to grow mold not hydrolysis. Measuring 3*6 inches 3*7 inches, this custom 11oz/16oz-simple modern travel coffee mug. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: BPA-free, leak-proof, travel-friendly.