A STANDARD WIG, OR “AVERAGE” WIG SIZE, IS TYPICALLY DESIGNED TO FIT HEAD CIRCUMFERENCES AROUND 22 TO 22.5 INCHES (ABOUT 56 TO 57 CM). THIS IS CONSIDERED A “MEDIUM” SIZE, AS IT FITS THE MAJORITY OF PEOPLE.

HOWEVER, MOST STANDARD WIGS ARE MADE WITH ADJUSTABLE STRAPS OR HOOKS INSIDE THE CAP, WHICH ALLOW THEM TO BE TIGHTENED OR LOOSENED BY ABOUT AN INCH ON EITHER SIDE. THIS MEANS THAT AN AVERAGE-SIZE WIG CAN OFTEN BE ADJUSTED TO FIT SLIGHTLY SMALLER HEADS (AROUND 21 INCHES OR 53 CM) OR SLIGHTLY LARGER HEADS (UP TO 23 INCHES OR 58 CM) COMFORTABLY. SO, WHILE IT ACTS AS A MEDIUM, IT CAN STILL ADAPT TO FIT SMALL OR LARGE HEAD SIZES WITHIN THAT RANGE.