Quarter Turn Lid: Threading technology allows four different lid placements for your drinking hand preference This reusable flip lid is designed to fit only threaded, stainless steel Simple Modern vessels in the Trek Collection. This lid does not fit the Simple Modern Voyager, Cruiser, Slim Cruiser, Classic, or any other brand of drinkware. Dishwasher Safe: Clean in the top rack of your dishwasher. S|M Compatible: Designed ONLY for Simple Modern tumblers (tumbler sold separately). BPA Free: Our lids are food grade safe