This is the Sherwood Onyx Mask Matte Black Low Profile Freediving Spearfishing mask Features: Stealthy matte black finish Low profile, dual lens design Quick adjusting buckles Tempered glass lenses The Onyx mask is a low profile dual lens mask that comes in a single color Stealth Black Silicone. This mask is perfect for spearfishing, freediving, or scuba diving. The low profile provides a tremendous field of view and is easy to purge.