Tera Armor Protect Guard Pads 1 Pair of Adults Shin for Motorcycle Racing Ergonomics design with three- part movable pads provides natural and flexible experience High impact PP shells with mesh fabric & foam pads allows for a greater degree of comfort and protection for knees and shins Multiple large vents in PP shells and foam for maximum ventilation Specially designed shin piece prevents guard from slipping down leg Equipped with adjustable elastic quick release strap and plastic cement hook for easy application and removal With screws and plastic cement fixed for durable using Dimension of knees: approx.38x13cm/15.0x5.1". Suitable for protecting knees of adult motorcycle riders during daily riding or motocross racing, etc.