Abstract: A helmet which is characterized by a rounded top and a shaped cowl provided with two sets of spaced slots defined by three tracks spanning an open lens window for receiving a transparent lens slidably mounted in an outside set of parallel slots and an optional tinted lens mounted in an inside set of parallel slots, for closing the lens window. In a preferred embodiment the transparent lens is a tear-away lens connected at a perforated interface to the next one of several additional lenses wound in end-to-end relationship in a roll, which roll is located inside a canister attached to the cowl of the helmet. Each transparent lens on the roll is individually, selectively and sequentially extended through a feed opening in the canister and through the parallel outside lens slots to a track lip projecting from the opposite side of the cowl, when the preceding lens is so damaged or coated as to adversely affect visibility and is slidably removed from the lens tracks.

Abstract: A face mask which is characterized by a soft rubber or plastic cowl provided with a track insert having pair of tracks spanning an open lens window for receiving a transparent lens slidably mounted in the tracks and closing the lens window. In a preferred embodiment, the lens is a tear-away lens connected at a perforated interface to the next one of several additional lenses wound in end-to-end relationship in a roll, which roll is located inside a canister attached to the track insert of the face mask. Each lens is individually, selectively and sequentially extended through a slot in the canister and through the parallel lens tracks to a track lip projecting from the opposite side of the track insert, when the preceding lens is damaged or coated so as to adversely affect visibility and is removed from the lens tracks.