Add a bright detail to any Rambler Tumbler or Mug with one easy switch. These pop-on, pop-off magnets pair perfectly with This dishwasher-safe MagSlider Lid so you can mix and match your colored magnet with your favorite Rambler Drinkware by the hThis, or by the day. Not to mention, it's a pretty handy trick if you're aimin' to prevent drink mix-ups.