Nathan Coker's Apron

Origin
Nathan Coker was born into slavery under the master Henry L. Sellers and later sold to Bishop Emery, but employed by a Purnell. Purnell badly mistreated Coker, letting him go hungry instead of feeding him. This hunger prompted Coker to steal food from the kitchen, swiping boiling hot dumplings straight from the pot and gulping them down. He felt no pain from the heat and seemed to experience more pain with a glass of cold water. A blacksmith at the time, when word spread of his unnatural ability, he demonstrated his immunity to fire by touching a burning hot coal to his hands, feet and mouth without experiencing any pain or injuries.

Effects
When worn, the user can withstand direct contact to heat up to 5000 degrees Fahrenheit. But in contact with colder objects, the user will experience third degree burns across their whole body.