Dragonhide

Armorsmiths can work with the hides of dragons to produce armor or shields of masterwork quality. One dragon produces enough hide for a single suit of masterwork hide armor for a creature one size category smaller than the dragon. By selecting only choice scales and bits of hide, an armorsmith can produce one suit of masterwork banded mail for a creature two sizes smaller, one suit of masterwork half-plate for a creature three sizes smaller or one masterwork breastplate or suit of full plate for a creature four sizes smaller. In each case, enough hide is available to produce a light or heavy masterwork shield in addition to the armor, provided that the dragon is Large or larger. Dragonhide is inherently magical. All dragonhide armor has an arcane spell failure chance of 0%. Dragonhide is rare and difficult to work; armor made from it costs 25 times its normal (non-masterwork) price (20 times if you provide the dragonhide) and takes three times longer than normal to craft. The DC of the Craft (armorsmithing) check to make dragonhide armor increases by +10. Dragonhide has 20 hit points per inch of thickness and hardness 10.