SRD:Rhino Hide

Rhino Hide: This +2 hide armor is made from rhinoceros hide. In addition to granting a +2 enhancement bonus to AC, it has a –1 armor check penalty and deals an additional 2d6 points of damage on any successful charge attack made by the wearer, including a mounted charge.

Moderate transmutation; CL 9th; Craft Magic Arms and Armor, bull’s strength; Price 5,165 gp; Cost 2,665 gp + 200 XP.