The aqua sphere k180 swimming goggles have a curved anatomic lens shape for improved streamlining and a great water tight fit the goggles have been strengthened by the exo core technology they feature a mirrored lens with 100 uvauvb protection to protect eyes and they allow 180 degree panoramic vision with great comfort thanks to the easy adjust head strap and the very soft 100 softeril gasket which also gives the goggles a leak resistant seal these goggles will feel great in the wate