Category: Performance. The contoured shape ensures optimal ventilation and clear vision during training. NIKE MAX OPTICS by ZEISS lenses offer exceptional quality and distortion-free vision for optimal viewing comfort and reducing eye strain. The discreet ventilation of the frame improves air circulation, while the rubber temple tips ensure a secure hold on the eyebrow arch and optimal comfort. Sturdy hinges ensure high durability. Microfibre pouch included.