The first hydro-swim aqua mask will quickly become your new essential accessory. Its large polycarbonate lenses with anti-uv treatment allow you to see what is going on around you. The skirt with double bevel fits perfectly to prevent any entry of water through the mask or nose. In addition, it has a fully adjustable double strap that you can tighten or loosen as desired, to ensure a perfect fit. This mask is the ideal choice for swimming in a swimming pool, the sea or a lake!