Simple post with a simple question: Batter up volume 2 book gives you a 5% damage reduction when wearing baseball caps and lettered jackets. However I do not know (and cannot find the answer to) how this actually works. Is it 5% damage reduction from wearing just one of these items? Does the damage reduction stack for a 10% reduction when you wear both items? Or is it only 5% when you have both on? Thanks for any help on the matter.