Poc joint vpd 20 knee guard great protection youll forget that youre wearing the comfortable and multi purpose vpd 20 knee provides extremely high shock absorption and freedom of movement the design of the sleeve and the 3d molding of the vpd keep them from moving downwards while riding specifications 3d molded vpd 20 knee protector perforated for air flow resistant aramid reinforced stretch fabric sleeve the construction and shape are designed to secure position optional elastic strap