This model, also known as the Outlaw X6, has become the pinnacle of design in Archery glasses. Carbon Fiber temples with titanium inner core can be formed to a customized fit. The forked ends are designed to wrap around and cradle the back of the head, reducing weight on the front and eliminating the need for a nose piece.The high performance megol rubber brow bar is complete with venting holes to push air down the back side of the lens and reduce any fogging.The Snap-tech lens changing system comes standard on the Outlaw X, making lens changing as easy as it gets. The 2 lens kit comes with an indoor lens (also good for low light) and an outdoor lens. The oversized lens allows for a completely unobstructed view across the nose bridge, making it the perfect archery glass. This also eliminates stray light coming from extreme angles. The Pilla Archery system was designed in tandem with Braden Gellenthien and Martin Damsbo. Pilla has the only frame and lens system in the world specifically designed by Archers for Archers. The functionality of the system is to provide the archer with optimal visual registration of the target, while managing light to allow the eye to relax and focus. Pilla has created a frame geometry with no nose piece, offering the shooter no visual obstruction through the nasal part of the glasses. This is critical for archers who, until now, have had to remove their sunglasses, even when shooting in bright conditions, because of frame and nose obstruction. When an archer has to remove their eyewear to shoot, the eye is shocked and this sudden change in light adversely affects the eyes ability to remain relaxed and focused. The use of an optically correct lens system designed for sunny and low light conditions provides an efficient piece of equipment to manage the performance of the most critical element of your equipment: your eye. Outlaw X is fully prescriptive capable. You can purchase the insert and have the prescription cut at your local optician of Pilla can make the presciption for you.