It has a double-wall vacuum intended to keep the warm h2o longer. The mug also provides a rotatable spout lid for different angles of use. This cup is useful for anybody with diminished hand power. Or also abilities, such as a disabled human being or even the elderlyAn ?n?b?l?? ?t?r??d is ?n artificially ?r?du??d ?h?m???l th?t h?? th? ??m? conseque