No more twisting and struggling to get the lid off! No more worries about hot soup spilling! This BPA free, leak proof, personal sized food container features a safe and easy to use 4-lock lid and keeps food and liquids hot for up to 7 hours or cold for up to 9! The container is constructed of stainless stell with triple-walled vacuum insulation for temperature retention and copper lining for better performance. It features an extra large opening and holds 2 cups (16 oz./480mL). The perfect size for personal food transport. We asked several young kids to test the 4 locking tabs on the lid to ensure that the container really is easy to open. All of them gave us a thumbs up!