or more magnets 54 in operation when air flows in a rearward direction 24 towards the brim 20 pressure builds below the brim 20 when sufficient pressure builds up below the brim 20 the brim cover 18 moves away from the brim support 14 and aperture 16 on one side in a tilting motion the tilting motion of the brim cover 18 uncovers the aperture 16 and allows air to flow through the aperture 16 in an upward direction 26 the tilting motion of the brim cover 18 pulls the brim end 38 of the one or more tightening straps 36 in embodiments incorporating only one tightening strap 36 with two brim ends 38 the tightening strap tightens around the wearer 39 s head and increases the resistance to the hat 10 being blown off the wearer 39 s head by a fast moving stream of air in embodiments incorporating more than one tightening strap 36 including both brim ends 38 and body ends 46 the tightening straps 36 pull the rear of the body 12 in a forward direction towards the brim 20 whereby the tightening straps 36 tighten the body 12 around the wearer 39 s head and increases the resistance to the hat 10 being blown off the wearer 39 s head by a fast moving stream of air the one or more magnets 54 and the one or more metallic elements 56 regardless in which arrangement.