The MagSlider Lid means enjoying a hot drink from our Rambler Tumblers without worrying about spills Unlike other slider lids, ours harnesses the power of magnets for smooth opening and closing Magnets also makes for easy cleaning - pop the MagSlider off, rinse, dry, and return it to the Lid Crystal clear lid so you can always see if you're in need of a top off The MagSlider Lid is spill-resistant, shatter-resistant, and BPA-free. NOTE: This is for the Lid ONLY Rambler Sold Separately