{TAIL ~ The golf club head} 1, wherein a width Pu of an upper portion of {HEAD ~ each protrusion} satisfy: 
{ TAIL ~ The golf club head } 1 , wherein a width Pu of an upper portion of { HEAD ~ each protrusion } satisfy :
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH