This standard size bobble hat is hand knitted in the round (meaning no seam!) with a detachable false fur bobble. The main body is grey with little black/white/brown bits, which are part of the wool.
 
The wool used is called 'Chunky Tweed' by King Cole.
 
The bottom edge is 23cm in diameter and ca 39/40cm circumfence. It can stretch quite a bit, meaning it can fit a good number of head sizes.
Length from edge to bobble is 23cm.