The NOVA Blast Helmet's Tear off Lenses allow workers to peel off lenses one at a time as they work, saving up to 45 minutes a day. The "FIT AND SAVE" system features individually folded tabs so the user can never grab more than one tab at a time so no lenses are wasted. These lenses are designed to fit the NOVA 200 Blast Helmet and come in packs of 50.