Description: Fuel Cell - Polished Black / Warm Gray Oakley Sunglasses -durable yet lightweight O MATTERand#174; frame material maximizes comfort with a perfect Three-Point Fit. Weâve been toying with a mix of art and technology for some time. The idea was to create clean, authentic style for those who donât just walk the path of life â they stomp it and leave footprints. Thatâs what led to Oakley FUEL CELLâ¢. The idea here is unflinching originality and a smooth look. Itâs proof that when authenticity speaks for itself, it speaks with volume. The lens curvature and frame architecture improve side protection, and durable yet lightweight O MATTER® frame material maximizes comfort with a perfect Three-Point Fit.