Elasticized poly/cotton headband stretches to comfortably surround your head On the crown of this baseball style cap, above the pre-formed bill, is a hook n loop patch embroidered Two reinforced air vents sewn into cap will keep you cool under pressure On the crown of this baseball style cap, above the pre-formed bill, is a hook-n-loop patch embroidered with the exclusive Voodoo skull. Place morale patch or name tapes over skull to customized your cap. Two reinforced air vents sewn into cap will keep you cool under pressure.