The Theragun Relief is NOT waterproof or machine washable. Do not allow any liquid or water to enter the device or charging port. First, ensure that the device is powered off. To clean, wipe the device's surface with a disinfectant wipe to remove any residue. Once the device is residue-free, use a clean disinfectant wipe to thoroughly clean both the device's surface and attachments, wiping in a circular motion.