Wasteland Champion Tire Armor by swanboy. I imagine a tire would actually absorb a lot of force from blunt instruments. (It also blocks a lot of cutting weapons, it just needs a bit of padding underneath it)
My name is Dimitri Zaitsev. I am the founder of Nuclear Snail Studios, and I do post-apocalyptic stuff such as never washing myself because real wastelanders don´t waste water. That aside, I make costumes, props, and pictures.