16oz Heat resistant carbon felt, useful as an ash catcher (For non-flammable / non-damageable surfaces only.) wind block or hot pad.
6"x7.5" size is perfect as a liner for the Firebox Nano Leather Case.
7.5"x12" size is perfect as a liner for the 5" Firebox Stove Leather Case.
It also solves the problem that portable stoves have of sinking into soft soil or sand.