Grandmaster Feline Armor is a Diagram in the Witcher 3: Wild Hunt that can be crafted by an Armorsmith.
- Light/Medium/Heavy Armor with ?? Armor Rating
- Head to the swamp in the top part of the map and go east to find a dilapidated location. At the gate, go along the wall on the right. Climb scaffolding to get in and take out the ruffians here. Once defeated, head into the red house and go left. The diagram will be in a safe behind a painting.