Besides adding extra protection, padded armor is used along with metal armor because metal armor by itself was heavy and uncomfortable against the skin. There are also places that the metal armor did not protect that padded armor can.
The Padded Siege Warfare Helmet Arming Cap helps to add the needed comfort while wearing a heavy helmet. It also allows for a perfect snug fit for a knights head. This cap has been hand sewn from cotton and a durable ecru canvas. It sits right atop the head like a modern day beanie would. If you have a particular helmet you have been eyeing the Padded Siege Warfare Helmet Arming Cap is a must.