Diagram: Grandmaster Feline trousers

This diagram is found in a chest along with the boots diagram at Arthach Palace Ruins during the quest, Scavenger Hunt: Grandmaster Feline Gear, which is started after meeting and talking with Lazare Lafargue about finding grandmaster gear for 5 of the witcher schools.

With a New Game +, this diagram is replaced with the grandmaster legendary version.