Smith has combined the most advanced technologies available with stylish customization the Phenom Turbo Fan revolutionizes the way the world looks at goggles. The Smith Phenom is a medium fit goggle with spherical Carbonic-X lens TLT Optics which provides ridiculously great optics. You might want to start wearing these things instead of sunglasses or maybe not Smith makes nice sunglasses too. Fans used to way goggles down, no longer you will hardly notice that the two speed micro-electronic fan is there because it is so light and quiet. The only difference is your Smith Phenom Turbo Fan Goggles will be fog free all day.