Detachable Lid
A lid that can detach itself into two pieces. A simple twist of the flap of 180 degrees opposite to that of the drink hole is all that is required. Then you can lift the flap backwards to remove it from the lid. Removing the top part of the lid is exceptionally good if you wish to wash any filth trapped in between the parts. This lid also has a small sipping hole which can conveniently be opened or closed.