The Fox. Lightweight and rimless make the Bloc Fox the ultimate sports eyewear sunglass.   Matt black frame with a grey Cat.3 optical class 1 Polycarbonate lens.  Features soft grip rubber temple tips – designed to reduce slipping and movement during activities, whilst the fully adjustable soft grip nosepiece ensures the perfect fit.  Wide wrap around lens for great peripheral vision and protection on even the sunniest of days.