Lowball 2.0 from YETI is the ideal drinking companion. Easy to stack and store, the Lowball&';s double-wall vacuum insulation will keep your hot drinks hot, and your cold drinks cold longer than standard drinkware 18/8 STAINLESS STEEL - Resists dents and drops and the Double-Wall Vacuum Insulation keeps drinks cold to the last drop STACKABLE - Save storage space when you remove the lids DISHWASHER SAFE - Because no one needs more work to do NOTE - While the magnet adds an additional barrier of protection to keep drinks hot or cold, this magnet slider is not leakproof and will not prevent spills