SeaFin Mask - New 2017 Full Face Snorkel Mask Technology. Mouthpiece-Free Design. Anti-Leaking, Anti-Fogging. GoPro Compatible. Adult & Youth Sizing. ULTIMATE BREATHING SYSTEM  Experience the newest evolution in snorkeling technology: the full face breathing mask. The innovative Evo Mask design eliminates the traditional 2-piece goggle & breathing tube setup and allows regular, natural breathing with no discomfort. CLARITY & COMFORT  Outfitted with a wide-angle, anti-fogging viewing window, comfortable silicon face padding, and easily adjustable nylon straps. Spend more time in the water and less time messing with equipment. DRY TOP SEAL & DRAIN VALVE  A dry top seal at the head of the tube prevents water from entering the mask when submerged. The seal works in tandem with a one-way drain valve at the chin which ventilates any leaked water. There is never a need to remove the mask. DURABLE  Constructed of a durable polypropylene frame and shatter-proof polycarbonate window, the Evo Mask ensures you own a quality, long-lasting device to take on all your adventures. Never worry about cracked or split snorkel tubes. STYLE & SIZE  Customize your look from a combination of 5 sleek color options available in both adult and youth sizes. In addition, some models feature a versatile GoPro attachment.