How much does a full suit of armour weigh?
Approximately 65 lbs., historically, for a suit of plate armour intended to be worn on the battlefield. The weight is well distributed across the body, and is far easier to wear on the body than carrying the same weight around in a sack. Some armour made for tournament jousting was built heavier and was more restrictive to movement, because it was essentially safety equipment only designed to protect the wearer while engaged in a specific, regulated, friendly activity. Battlefield armours required versatility, and could not be so heavy and restrictive or they would endanger the wearer.