This standard size bobble hat is hand knitted in the round (meaning no seam!) with an attached bobble using the same wool. The acrylic wool is self patterned light brown, white, turquoise and green tinted wool.
 
The bottom edge circumfence is about 53cm. It doesnt strech well, so its a tight'ish fit. The maximum it will stretch is to 58cm circumfence.
Length from edge to bobble is 18cm.