The most critical part of any dive is visibility. This scuba diving mask sets a new standard in optical quality and distortion-free vision. The lens of this snorkeling mask is made of extremely transparent glass that is praised for its appealing appearance & optical properties. This scuba diving product is a great choice for swimming, diving and snorkeling in deep seas of India also for other watersports. Because of the low iron concentration, glass has a higher light transmittance and a lower green tint than other glasses. This eliminates lens distortion & improves colour and visibility underwater in any low-light circumstances. The frameless snorkel dive equipment has 100% pure silicon skirt with crystal clear lens providing wide vision & low volume.