I have used and loved this mug for a few months now and very gently hand washed the cup and lid with every use. Unfortunately, the very cheap plastic lid just broke. I have an extra ring for the top I am using now, but due to the broken lid, I am no longer able to use this VERY expensive mug for travel.  Bummer. I don’t recommend if you plan to use this product for travel. The lid won’t likely hold up.