Seattle Seahawks Riddell NFL Authentic Pro Line Full Size Helmet. The ultimate football helmet collectible. This officially licensed NFL Pro Line helmet is just like what the pros wear. Features: Official team decals. Kra-Lite II??¬ Polycarbonate Lexan shell and inflatable liner with 2 inflation points. Steel polyvinyl-coated quarterback / running back style facemask and 4-point chinstrap.