This top hat is made of black felt with tiny speckles and is 2 1/2" x 3" wide and 1" tall.  The oval head opening is 1 1/2" by 1 1/4".   The band is 1/4" wide black ribbed ribbon.  

The hat will fit most 12" fashion dolls like Ken (as shown) and GI Joes with thick folded hair, 11 1/2" fashion dolls like Barbie, and 11" teen dolls like Kevin, Teen Skipper and High School musical dolls.  It might not fit a Ken or BJD with thin molded hair.  It fell over the eyes of my Luke Skywalker and my Ken Arsenio Hall.  Smaller boy and girl dolls can NOT wear it because their heads are too small.    

I no longer put Velcro in the hats to help hold it to heads with hair because I had complaints that the little hooks messed up the doll's hair but you can easily purchase and add a piece of sticky back Velcro inside the crown if needed.  (Note: Velcro also helps a hat fit better if it is a little loose because a doll doesn't have enough hair).