Made from durable stainless steel, the Forge Flow Insulated keeps your drink hot for up to five hours and fresh for ten. The mugs shape naturally fits into car cup holders, and Forge Flow Insulated mugs are commonly seen in offices, homes, schools, and on the go. The drinking lid is operated with a generously sized "trigger" and also has a lockable open position. The lid is leak-proof. In this updated model, cleaning the drinking lid is even easier: the lid mechanism can be opened on a hinge, exposing all surfaces for thorough cleaning. - Vacuum-insulated construction - Odor-free and taste-free - Mug body (18/8 stainless steel) is dishwasher safe - Lid (plastic) should be washed by hand - Silicone element on the bottom helps keep the mug stable - 10-year warranty for material and manufacturing defects - Finger loop on the lid makes it easy to carry and allows it to be attached or secured to a backpack This product is free from BPA, BPS, and BPF.