The Flash goggles are characterized by an elastic nose bridge , which allows for perfect adaptability to a large number of facial profiles. The lenses are slightly inclined at 18? to follow the natural shape of the human face and increase the field of view. They are also shatterproof and offer UV ray protection . An internal anti-fogging treatment prevents fog during use. The nose gasket is made with hypoallergenic,high-quality TPR to ensure comfort and a perfect seal. The double-strap is made of silicone to ensure a perfect fit without over-tightening. The Cressi-patented buckle system makes adjusting the strap effortless. Easy replacement of strap and buckle system. The Flash are versatile goggles, ideal for recreational swimming and competition, as well as both indoor and outdoor use.