The Vent Armor Composite shell of the Vapor XXXX Shin Guard provides lightweight impact absorbsion while the ventilated Free Flex liner allows for increased flexibility. The Free Flex knee cap's flexible dual density impact guard covers more area and protects the player in any position. The segmented liner is removable for cleaning. An adjustable calf wing lets you customize protection while the Nike Grip Print keeps the shin guards in place during play. The Vapor XXXX Shin Guards will have you feeling invincible!