Flat Performance has perfect "mid crown" height
"Love the hat--I like the boxy profile of fitted hats like the New Era 59fifty, but the height on those is a touch high for me (the hats push down slightly on my ears). The Branded Bills "flat performance" series provides a similar profile with slightly less height. I wear a 7 1/2 in New Era, and the "classic" snapback size is a nice fit, with about 3-4 snaps in the back."