Oakley OX3218-0152 The Socket 5.5 is crafted from C-5™ alloy, an ultra-lightweight and highly durable metal composite made by fusing five metal compounds. This construction blends the strength of metal with reduced weight for enhanced comfort.It features a semi-rimless rectangular design with sleek angular lines, inspired by industrial tools—specifically, even incorporating chamfered details reminiscent of a socket wrench.Enhanced grip comes from Unobtainium® ear socks and air-filled silicone nose pads, ensuring a secure, no-slip fit during active wear.