Hat with rotatable and removable brim

A hat, comprising:

• a crown having a base;
• a headband layer affixed to said crown at said base by a base seam extending around a circumference of said crown;
• a rail having a T-shaped cross section, said T-shaped cross section being defined by a rail stem and an arm, said rail being affixed to said headband layer;
• and
• a bill having a fabric band and a track affixed thereon, said track having a track stem and a channel receiving and retaining said rail therein for guiding said bill onto said crown, said channel having opposing parallel side segments each having respective inwardly directed flanges defining a space therebetween, said inwardly directed flanges retaining said arm of said rail in said channel as said rail stem passes through said space allowing said bill to rotate onto said crown, said track stem defining one of said opposing parallel side segments of said channel and establishing a flush surface over a height of said track, said track stem being affixed onto said fabric band with said flush surface directed toward a head of a wearer of the hat.