Bought it, within a week, lid failed.  It's overly complicated spring and small plastic parts mechanism is totally the wrong design for a travel mug.  It no longer opened.
I wrote another review about that, and asked them to replace.
They happily DID replace it, thank you ember.
The new lid, had it about 4 days, failed, same thing. Press down to open, doesnt "click" to stay open.  Has not been through dish washer or dropped just used and rinsed daily.

The LID never should have been this fancy, just a piece of plastic with a hole would have been better than this, or even a single thumb-slider opener.  Are there 3rd party lids that fit I wonder?