FLY Racing Revel Kids Roost Guard Armour BlackFLY Racing Revel Kids Roost Guard Armour Revolutionary BioFoam chassis attachment system eliminates injury causing plastic rivets and utilizes soft plastics and TPR rubbers without high points that could injure in the event of an impact Air channels molded into the BioFoam allow hot air to escape CE rated protection created using a triple layer, high density memory foam in between the outer plastic and the BioFoam that is in contact with the user.