"A thin shirt mad long ago. It's coming apart at the seams, but it's better than nothing. The sleeves are a bit short on the side."
--In-Game DescriptionThe Old Shirt is a chest armor that appears in The Legend of Zelda: Breath of the Wild. It's part of a Worn Set, alongside the Well-Worn Trousers. Its a simple shirt that can obtained at the beginning of the game in the Shrine of Resurrection after Link awakens from his one-hundred year slumber.
Its a simple shirt that, according the the game's description, is falling apart at the seams and made of a very thin material. It has a defense rating of 1. The armor also cannot be dyed or upgraded at the Great Fairy Fountains.
The Old Shirt can be found in a treasure chest in the Shrine of Resurrection immediately after starting the game for the first time, also along with the Well-Worn Trousers.