The SG-1 Goggles fit head sizes: Medium-X Large. This model comes with Smoke Grey/Clear lenses. Smoke Grey lenses provide maximum glare reduction without distorting colors. They are excellent in bright/glare conditions. Light transmission: 15%. Clear lenses provide maximum light transmission in hazy or overcast, dusk/dawn conditions. Light transmission: 90%. The Wiley-X SG-1 Goggles include 2 lens package (Smoke Grey/Clear), zipper top nylon case, temples (arms), elastic strap and leash cord.