SRD:Mithral Shirt

Mithral Shirt: This extremely light chain shirt is made of very fine mithral links. Speed while wearing a mithral shirt is 30 feet for Medium creatures, or 20 feet for Small. The armor has an arcane spell failure chance of 10%, a maximum Dexterity bonus of +6, and no armor check penalty. It is considered light armor and weighs 10 pounds.

No aura (nonmagical); Price 1,100 gp.