Kevlar Armor (3.5e Equipment)
From D&D Wiki
This armor is similar in appearance to full plate, with a hood instead of a helm, it also offers less protection, offering only +4 to armor class, but it has no maximum dexterity bonus, as it is made entirely out of kevlar, and only weighs 8 lbs. As such, it also has an arcane spell failure chance of 0%, and an armor check penalty of 0, as it resembles fullplate, but is not nearly as heavy or bulky as it which also allows it to be worn under other armor pieces. The price for kevlar armor is 32 gp.