Oakley Leffingwell Sunglasses. Leffingwell features a full rim, square lens shape infused with design inspiration taken from the craftsmanship and finishes of surfboards and the lifestyle around surfing. The plant-based BiO-Matter®* frame has antique-finished decorative elements and textured temples. The subtle Oakley logo on the temples is designed for those who gravitate toward subtle, elevated design aesthetics. Leffingwell comes with Prizm™ Lens Technology designed to enhance color and contrast to see more detail across the water and beyond. Oakley Leffingwell Sunglasses