Check the listing for details. See Reef full face snorkel Mask size adult small/medium. Condition: New. Listed at 34.70 USD. See Reef full face snorkel Mask. Condition is "New". NEW 2017 DESIGN – the 4 valves make this easy-to-breathe snorkel perfect for seeing 180° under water. What’s more, the upgraded EXTRA LONG BREATHING TUBE makes drawing breath even easier while keeping the mask completely fogfree.UPGRADED FLAT CLEAR LENS – older designs use a curved lens that is good in theory, but during our extensive testing we noticed that vision actually became distorted. Now we have upgraded the lens design so that it out-performs all the others, allowing perfect clarity while maintaining both comfort and the easy breathing function.COMPLETE KIT – SeeReef comes with all the gear you need for your snorkel adventure – a combo of 2 different sets of ear plugs to make sure they fit you perfectly, a handy travel bag & spare sealsShipped with USPS Priority Mail.