Offering a 180 degree field of vision and a leek free fit the seal 2 mask from aqua sphere is a great choice for all swimming activities its blue plexisol lenses with anti fog and anti scratch treatments provide 100 uvauvb protection while easy to adjust pull buckles and softeril gaskets ensure comfort and durability the swimming mask is also equipped with torsion free inserts that help protect the shape of the frame it is suitable for children aged 3 and over