HIGH PERFORMANCE LENSES FOR RAZOR-SHARP VISION. Oakley perfectly integrates the past into the modern world of today with the HSTN.Their round lenses make them a gender-neutral pair of sunglasses that, with their Razor Blade-inspired temples, dare to take a design look back in time. The lightweight, yet virtually indestructible O Matter™ frame material makes you almost forget you're wearing sunglasses. Due to the three-point fit of the sunglasses, the lenses are always held in the correct position and there are no unpleasant pressure pointsOakley Prizm™ lensesPrizm™ is the revolution in lens optics. By fine-tuning individual waves of colour, Prizm™ sharpens visual acuity to reveal nuances that would escape the naked eye. With ordinary sunglass lenses, the environment appears dull and flat. Prizm lens technology makes everything look alive and vibrant.