If you're all about packing light and streamlining your travel essentials, check out Spy Optic's latest frame, the Fold. It's your "goes with everything" black pair of shades in a custom built Grilamid frame that's highly durable and five-barrel hinges adds another level of strength. The frames are also available with the company's "Happy Lens" technology that filters out Red UV light and instead allows long wave blue light rays to increase alertness and uplift your mood. If that sounds ridiculous (we thought so too), there's some actual science behind this, the technology has been featured in light therapy boxes and home and building windows in the last several years. The Happy Lens also has polarization built-in for increased contrast and color enhancement.