Super soft black hypo-allergenic silicone, together with 3.2mm thick single tempered safety glass combine to provide a mask with optimized range of vision. The liquid silicone used and precision frame design ensures a fantastic close fit for maximum visibility. Exceptionally low volume for easy water drain and fully adjustable extra wide strap, which is quick and simple to adjust and the highest level of comfort of any mask in it’s class. Heavy Duty storage box completes this great package.