YETI MagSlider Lid - Unlike other closeable drink lids, the Yeti MagSlider harness the power of magnets (yep, real magnets) for smooth opening and closing, and has a crystal clear lid so you can always see if you’re in need of a top off. Magnet technology also makes for easy cleaning — you can pop the MagSlider off, rinse, dry, and return it to the YETI Slider Lid. And the MagSlider Lid is spill- and shatter-resistant. Dishwasher-safe