Developed for reading tricky greens in changing light conditions the Oakley Golf M Frame Strike features a versatile G30 lens for high contrast applications--especially in flat to low light. The refined frame design gives the Golf M Frame Strike a dressier look than other multi-sport Oakley M Frames so nobody will confuse you with the members of the local cross-country running team (unless you're in your running shorts). Vented openings along the top of the lens help keep the Golf M Frame Strike from fogging--especially beneath a visor or cap on a hot afternoon.