Civil Air Patrol flat top ABU cap (TRU SPEC). This uniform is worn by senior members and cadets of the Civil Air Patrol (CAP), only. Please reference hat size chart for sizing. Please select your size.

Hat Size 6 3/4 = head circumference 20 1/2" 

Hat Size 7 = head circumference 21 7/8" 

Hat Size 7 1/4 = head circumference 22 1/4"

Hat Size 7 1/2 = head circumference 23"

Hat Size 7 3/4 = head circumference 24"