Like [[power armour]], Terminator suits have an outer shell of [[ceramite]]-bonded plates powered by electrically-motivated fibre bundles. Plates of heavy [[plasteel]] further armour the ceramite sections, especially on the front of the suit. This extra armouring provides a level of protection that is far superior to normal Marine armor; not even a [[Missile_launcher#Imperial_Munitions_Types|Krak missile]] will penetrate the suit's breastplate.{{Fn|7}} It has even been noted to allow its wearer to survive being stood on by a [[Titan]].{{Fn|23}} It also contributes to the immense weight of the suit, making the wearer less maneuverable and slower. External [[adamantium]] ribs help support this weight, while the inclusion of suspensors help the suit carry heavier support weapons.{{Fn|3}}