Buyer's Tip: The Oakley Carbon Blade sunglasses eyeglass leads the trend in lightweight eyewear with use of advanced carbon fiber. This is the material found in state-of-the-art aircraft designs as it provides both high strength and superior durability. To compliment this advanced frame material, think OptiPad® replacement nose pads for the Oakley Carbon Blade as these nose pads use only premium quality super soft and supple silicone. The center of each nose pad contains a bubble of air which self adjusts according to the specific frame and lens weight of the eyeglasses. To compliment the advanced eyewear design, use superior quality silicone OptiPad® replacement nose pads for the Oakley Carbon Blade.