Don't let the issues and failures of the junky knock-off full-face snorkel masks deter you from enjoying the best snorkeling experience possible! Ocean Reef has been making full face masks for over 25 years, and continue to be a leader in the diving industry. There are many companies now attempting to copy their design and technology. The simple truth is they have no idea what they are doing so they end up producing junk products cheaply, quickly, and oftentimes dangerous. If you see a full-face snorkel mask is not made by Ocean Reef (Aria, Head SeaVu Dry, Tribord Easybreath) it is a knock-off and should be avoided. To provide the consumers with the best possible info and knowledge Ocean Reef decided to release some of their research and development. They also released testing results conducted by independent laboratories on the Aria Masks. Please read the documents and come to your own conclusion..