Gunnar Optiks Anime Advanced Gaming Eyewear: * Aluminum-magnesium frame construction generates proper strength and optical stability through a hybrid lightweight metal alloy * Hidden spring hinges flex to ergonomically fit a wide variety of head and face shapes * Lightweight construction and proper weight balance guarantee long wearing comfort without pressure points or fatigue * Micro-engineered lenslocks securely retain lenses without undue stress or distortion of the optics * Adjustable floating nose pads articulate in 3 dimensions to properly fit and comfortably secure eyewear in place