GREAT REPLACEMENT MAGNET: The easy to open and pop out magnet perfectly matches the MagSlider cover helping to prevent annoying beverage confusion PERFECT COMPATIBILITY: The replacement of magnetic slider is compatible with all magsilder lid including 10oz 16oz 20 oz and 30 oz. Easily repair lost sliders without the need to purchase a new magsilder lid. EXCELLENT QUALITY: Made of high-quality materials the dishwasher is safe; Keep your drinks warm/refrigerated for longer