CS COSDDI Travel Mugs, Insulated Coffee Cup with Leakproof Lid - Reusable Coffee Cups Travel - Car Coffee Cup - Stainless Steel Coffee Mug for Hot and Cold Water and Tea, 380mlKeep Hot and Cold for HoursCS COSDDI insulated travel mug for maximum temperature retention, keeps hot iced beverage up to 6 hours. Pour hot or iced coffee in your coffee travel mug and feel energized for the day. leakproof coffee cupOne of the most important features for a travel cup is to make sure it wont leak if it is knocked over or stored in a bag. Luckily the CS COSDDI comes with a BPA free leak proof screw lid which can be tightly secured.