content: I got this and loved the ergonomics. Great feel, size and balance. I was bitterly disappointed that after one cycle in the dishwasher, the top malfunctioned. The mug has a twisting/locking sealing mechanism and the heat from the dishwasher must have expanded it. Now it will not pour at all. Please note, this was not a 'special cycle' or high temp wash, just normal dishwasher and the thing is ruined. I also ruined a pair of pants yesterday when I couldn't figure out why I could not sip and them coffee came running out the side.My only saving grace is that I figured this out before I went and bought more. BAD PRODUCT DO NOT BUY