PORON® XRDT foam inserts treated with MICROBAN® antimicrobial protection to resist odors and mildew V2 Liner system = Vertex foam + VN foam Triple density impact management foam Ergo translucent ear covers CSA, HECC, CE certified Game Day Protection Customized Fit Spring loaded occipital lock Tool-free adjustment Slow memory comfort foam Ventilation ports Molded memory foam temple pads