Size recommended for Adult's use Floating design - easy to find in a pool or lake Comprised of a one-piece silicone frame with adjustable nose piece and head straps Polycarbonate lens with anti-fog and U.V. protection Distortion free lenses Light weight Shatter resistant For recreational swimming Seals out water No metal parts - will not be affected by salt or chlorine. See product packaging for usage instructions and caution advisory.