See the full review here: http://www.mountainlifemag.ca/2014/11/trek-fast-light/
Trek Fast & Light
The mission of Julbo‘s Trek sunglass is simple: to achieve optimum performance while moving fast in extreme environments by providing highly technical, yet lightweight eyewear. For those committed to the outdoors via mountaineering, climbing, and trail-running, the Trek is the perfect combination of tech principles and performance ergonomics.
Detachable shields block lateral rays from intense glare as well as offer superior ventilation when necessary. Julbo’s Flex Nose design and 360° adjustable temples provide optimum hold. It’s available with either the Cameleon or Zebra lens for optimal visibility and protection against intense sunlight from desert to glacier conditions.