All Resa lids, sleeves, and straws are top-rack dishwasher safe. Most Resa bodies are dishwasher safe, with a few exceptions. Check the bottom of the sleeve on your Resa to see if it is recommended as handwash only.
Remember to remove the silicone straw lid before washing. To do this, simply turn the mode indicator halfway between the locked and open positions and pull up on the straw center piece for easy cleaning. For hand washing, check out our cleaning essentials kit, or read our full guide on how to clean your tumbler.