Harlotte double-layer coffee thermos cup made from 304 stainless steel with a food-grade plastic exterior. Designed to keep hot or cold drinks for 8–10 hours, with a leakproof BPA-free design and silicone anti-slip grip. Suitable for coffee, tea, and other beverages at home, in the office, bedroom, or car. Capacity: 510ml. Color: White. Material: 304 Stainless Steel. Features: Double-wall vacuum insulation, leakproof, BPA-free, anti-slip grip.