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IronMan purpose-built the Principle sunglasses to help athletes embody the principles of the race itself: Passion. Hard work. Success. Excellence. These shades are full of performance features that make the most of your training: InfraRed Polycarbonate 2.0 mm lenses reduce eye fatigue, and an anti-reflective coating prevents back glare. 8-base de-centered lenses provide superior coverage and distortion-free optical clarity, and 100% UVA/UVB protection keeps your eyes safe from the sun’s harmful rays. The semi-rimless design is lightweight and comfortable, mile after mile. For high-performing sunglasses that don’t break the bank, choose the Principle from IronMan.