This is the first flip and go - styled mug that actually fits in one of my cup holders. Needless to say I was pretty excited that it did that. It holds hot and cold liquids really well and it's water tight. Didn't have to worry about it leaking if it fell out of the cupholder or if it would keep it warm/hot. 

The only thing I wish this mug had is a bigger capacity. I drink a lot throughout the day, but I suppose more trips to refill this = more exercise.