Primotec diving mask with optical correction - M80 (+1.0 – -8.0) - BlackNOTE: When ordering this mask, the delivery time will be extended by up to 5 additional days. Get clear vision underwater with this compact, high strength diving mask designed for divers and snorkelers with visual needs. Available in powers from +1. 0 to +4. 0 and 1. 0 to 8. 0, you can choose the optical lens that suits your vision. The black frame with carbon fiber pattern gives a stylish and modern look, while the tight fitting silicone inner mask