Riddell NFL Helmets * The Full Size Riddell Revolution NFL Helmet is the striking shape of the future and the most significant design change in football helmets in over twenty years.. . Each Revolution ProLine fullsized helmet is the actual helmet NFL teams wear on the field. The Revolution design includes: an extended mandible (jaw area) protection, increased side padding, integrated facemask attachment system, weight balance redistribution, and distinguishing elliptical air vents.