Please Note: all of our tumblers are dishwasher safe, however like any product (whether it's clothes or tumblers) handwashing will keep the coating last longer. I do NOT recommend the top rack of the dishwasher is it could peel off the coating. Hand wash or place on the bottom rack. I only say this because the top rack water is so pressurized and hot. Place in dishwasher at your own risk. I do have this stated in other areas but wanted to include here as well.