The MagSlider Lid means enjoying a hot drink from our Rambler Tumblers without worrying about spills in the cab or splashes on the go. Unlike other slider lids, ours harnesses the power of magnets (yep, real magnets) for smooth opening and closing, with a crystal clear lid so you can always see if you're in need of a top off. Our magnet technology also makes for easy cleaning - you can pop the MagSlider off, rinse, dry, and return it to the Lid. And the MagSlider Lid is spill-resistant, shatter-resistant, and BPA-free, just like the rest of our Rambler accessories.