A Space Marine's protection is provided by their Armour, known as Power Armour. Power Armour is a fully enclosed suit of powered armour that is built Primarily from Ceramite. Ceramite is a durable, energy absorbent and heat dissipating material making the armour exceptionally protective against low-powered or even mid-powered energy based weapons designed to target infantry (such as lasguns, multi-lasers etc.) as well as incendiary weapons such as flamethrowers. To put it in a modern perspective, a Space Marine's armour is capable of taking direct hits from 21st century artillery pieces without sustaining critical damage. It also performs many other functions than just protection, including hostile-environment life support, combat first aid, extra mobility, increased reflexes and enhanced strength. The armour is fully powered by a Power Pack attached to the back plate of the set of armour. The Power Pack serves as the power generator for the armour, as well as the housing for emergency power generators. Additionally, field officers or specialist ranks have access to special equipment (sometimes referred to as "wargear") such as protective force fields, jump packs, active camouflage cloaks, powered melee weaponry, and other uncommon or rare war relics.