Avision Ahead 20/20 Visor is a half shield for a hockey helmet only. It is not a replacement lens for a full combination hockey mask. It is for adults only. The crystal clear, distortion-free polycarbonate is dual coated on both sides with the most advanced anti-fog and scratch resistant technology. The competitions visors that are injection molded are not scratch resistant inside so wiping the sweat you're actually scratching the lens and wearing off the anti-fog coating. Not with our visors. This pro style hockey visor easily mounts on adult helmets. Mounting hardware is included. Note: this is a visor only and does not protect the lower portion of the face. Object can come up and penetrate the open area below the visor. We recommend you consider a full combo mask.