Completely unmatched in breathability and comfort, the Nike Pro Hypercool Vapor Skull Cap 4.0 utilized Nike's exclusive Hypercool material in strategically placed areas for maximum ventilation and breathability, and it was constructed using signature Dri-FIT fabric that wicks away sweat, keeping you dry and comfortable. The flat lock seam construction and stretch material provide a better, smoother fit around your head, and the cap was completed with a Nike Swoosh and Nike Pro branding for style.