Abstract: An elastic visor for detachable mounting on headwear is of sheet neoprene having a reinforcing layer of nylon, with a crown aperture that is stretched around, and grips the surface of a headwear to which it is mounted. The neoprene, of about five millimeter thickness, serves to grip the surface of the headwear. The flexible material of the visor permits the peak to deflect under the application of undue force. Ear-protective side flaps and an extended protective neck-flap portion can be incorporated. Decorative crown cut-outs are silhouetted against the helmet.