Wettie Full Face Snorkelling MaskIdeal for those that enjoy snorkelling but struggle with the snorkel mouth piece. These encompass your face allowing you to breath normally while enjoying the underwater world. Our Full face mask uses a venting system that allows expelled CO2 to escape through the sides of the mask. This is an important safety feature otherwise the CO2 builds up in the mask. Dont be fooled by cheaper knock offs on the market! High quality, versatile full face