Simplify the following text for a Grade 5 native English-speaking person.
Original: Armour has been used throughout recorded history , and manufactured from a variety of materials ; starting with rudimentary leather protection , personal armor evolved to mail and full plated suits of armor .
Simplified: Armour has always been made from the strongest materials available at the time , but weight has always been a problem . Early armor was made from leather , then later metals were used ( e.g. mail or plate armor ) .