The Rambler® 10 oz. Lowball is the ideal drinking companion. The Lowball’s double-wall vacuum insulation will keep your hot drinks hot, and your cold drinks cold longer than standard drinkware. Like the entire Rambler® Family, the Lowball and included MagSlider™ Lid are dishwasher safe for easy cleaning. While the magnet on this fan-favorite lid adds an additional barrier of protection to keep drinks contained and prevent heat or cold from escaping, please note — this magnet component is not leakproof and will not prevent spills.