HatCo Stetson Stratoliner I took my Caribou HatCo Stetson Stratoliner & used my Hat Shaper to take it to open crown by removing the liner, spraying it with distilled water & using a steam iron with a handkerchief between the felt & the iron... Top view... I went to a teardrop with front pinch at 4.25". The back is 3.75" Although the Hat Shaper helps with my Long Oval noggin, it is drying on my head to help coax it to more LO contours. Here is the hat in factory form... The subtle changes makes it certain this hat will get worn. The box & tag say 2.5" brim but all my measurements show 2 5/8" from the reed to the edge, another plus in my book.